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Chen Z, Wang S, Xiong W, Wang F. Enhancing the energetic and magnetic stability of atomic hydrogen chemisorbed on graphene using (non)compensated B-N pairs. Phys Chem Chem Phys 2024; 26:13731-13739. [PMID: 38682161 DOI: 10.1039/d4cp00923a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/01/2024]
Abstract
In this pioneering study for identifying atomic scale magnetic moment, a single hydrogen atom chemisorbed on pristine graphene exhibits distinct spin polarization. Using first-principles calculations and analyses, we demonstrate that the binding between a H adsorbate and a C substrate is substantially enhanced via compensated B-N pairs embedded into graphene. Surprisingly, the interaction can be further enhanced via non-compensated B-N pair doping. Our established prototype of orbital intercoupling between H 1s and hybridized pz of gapped band edges gives an insight into the enhancing mechanism. For compensated B-N doping, the conduction band minimum (CBM) is pushed upward, which induces stronger interaction between the H 1s and hybridized pz orbitals of the CBM. For non-compensated B-N doping, the orbital interaction occurs between H 1s and hybridized pz orbitals of valence band maximum, thus further lowering the resulting bonding energy due to the enlarged gap. This significantly enhanced interaction between H and C atoms agrees well with the results of charge localization at the gapped band edges. More importantly, the corresponding magnetic moments can be well maintained or even enhanced in both doping; here, one more H atom is needed for non-compensated doping, where its electron occupies the empty CBM. Our findings might provide an effective and practical way to enhance the energetic and magnetic stability of atomic scale magnetic moment on graphene and extensively expand the conception of non-compensated doping.
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Affiliation(s)
- Zhengyan Chen
- College of Software, Henan Finance University, Zhengzhou 450046, China
| | - Sanjun Wang
- College of Artificial Intelligence, Henan Finance University, Zhengzhou 450046, China
| | - Wen Xiong
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China
| | - Fei Wang
- International Laboratory for Quantum Functional Materials of Henan, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, China.
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2
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Narayan J, Bezborah K. Recent advances in the functionalization, substitutional doping and applications of graphene/graphene composite nanomaterials. RSC Adv 2024; 14:13413-13444. [PMID: 38660531 PMCID: PMC11041312 DOI: 10.1039/d3ra07072g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Accepted: 04/01/2024] [Indexed: 04/26/2024] Open
Abstract
Recently, graphene and graphene-based nanomaterials have emerged as advanced carbon functional materials with specialized unique electronic, optical, mechanical, and chemical properties. These properties have made graphene an exceptional material for a wide range of promising applications in biological and non-biological fields. The present review illustrates the structural modifications of pristine graphene resulting in a wide variety of derivatives. The significance of substitutional doping with alkali-metals, alkaline earth metals, and III-VII group elements apart from the transition metals of the periodic table is discussed. The paper reviews various chemical and physical preparation routes of graphene, its derivatives and graphene-based nanocomposites at room and elevated temperatures in various solvents. The difficulty in dispersing it in water and organic solvents make it essential to functionalize graphene and its derivatives. Recent trends and advances are discussed at length. Controlled reduction reactions in the presence of various dopants leading to nanocomposites along with suitable surfactants essential to enhance its potential applications in the semiconductor industry and biological fields are discussed in detail.
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Affiliation(s)
- Jyoti Narayan
- Synthetic Nanochemistry Laboratory, Department of Basic Sciences & Social Sciences, (Chemistry Division) School of Technology, North Eastern Hill University Shillong 793022 Meghalaya India
| | - Kangkana Bezborah
- Synthetic Nanochemistry Laboratory, Department of Basic Sciences & Social Sciences, (Chemistry Division) School of Technology, North Eastern Hill University Shillong 793022 Meghalaya India
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3
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Huang C, Zhao S, Chen R, Johansson E, Aqeel M, Klement U, Andersson AM, Taher M, Palermo V, Sun J. Binder assisted graphene derivatives as lubricants in copper: Improved tribological performance for industrial application. iScience 2024; 27:109429. [PMID: 38562522 PMCID: PMC10982548 DOI: 10.1016/j.isci.2024.109429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Revised: 01/09/2024] [Accepted: 03/04/2024] [Indexed: 04/04/2024] Open
Abstract
Originally derived from graphite, high-quality single-layer graphene is an excellent anti-wear and -friction additive in metal matrix. Here, the tribological performance of 3 different commercialized graphene derivatives (e.g., graphene oxide [GO], reduced graphene oxide [RGO], and graphene nanoplatelet [GNP]) as additives in a Cu matrix, were investigated from an industrial perspective. To increase the interaction of graphene derivatives with Cu particles, and addressing the aggregation problem of the graphene derivatives, different binders (polyvinyl alcohol [PVA] and cellulose nanocrystals [CNC]) were introduced into the system. Benefiting from such a strategy, a uniform distribution of the graphene derivatives in Cu matrix was achieved with graphene loading up to 5 wt %. After high-temperature sintering, the graphene is preserved and well distributed in the Cu matrix. It was found that the GNP-containing sample shows the most stable friction coefficient behavior. However, GO and RGO also improve the tribological performance of Cu under different circumstances.
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Affiliation(s)
- Changjie Huang
- Department of Industrial and Materials Science, Chalmers University of Technology, 41296 Göteborg, Sweden
| | - Su Zhao
- ABB AB, Corporate Research, 721 78 Västerås, Sweden
| | - Ruiqi Chen
- Department of Industrial and Materials Science, Chalmers University of Technology, 41296 Göteborg, Sweden
| | | | - Muhammad Aqeel
- Department of Industrial and Materials Science, Chalmers University of Technology, 41296 Göteborg, Sweden
| | - Uta Klement
- Department of Industrial and Materials Science, Chalmers University of Technology, 41296 Göteborg, Sweden
| | | | - Mamoun Taher
- Graphmatech AB, Mältargatan 17, 753 18 Uppsala, Sweden
| | - Vincenzo Palermo
- Department of Industrial and Materials Science, Chalmers University of Technology, 41296 Göteborg, Sweden
- Institute of Organic Synthesis and Photoreactivity (ISOF), National Research Council of Italy (CNR), Via P. Gobetti 101, 40129 Bologna, Italy
| | - Jinhua Sun
- Department of Industrial and Materials Science, Chalmers University of Technology, 41296 Göteborg, Sweden
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4
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Yu Z, Bai H, Li B, Li L, Pan H. Two-Dimensional Asymmetric Multiferroics: Unique Way toward Strong Magnetoelectric Coupling and Multistate Memory. J Phys Chem Lett 2024; 15:1795-1801. [PMID: 38329293 PMCID: PMC10895667 DOI: 10.1021/acs.jpclett.3c03527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2024]
Abstract
Two-dimensional (2D) materials have provided a fascinating platform for exploring novel multiferroics and emergent magnetoelectric coupling mechanisms. Here, a novel 2D asymmetric multiferroic based on Janus 2D multiferroic MXene-analogous oxynitrides (InTlNO2) is presented by using first-principles calculations. We find three inequivalent phases for InTlNO2, including two metallic phases (p1 and p2) and one semiconducting phase (p3) with a band gap of 0.88 eV. All phases are room-temperature multiferroics with different Curie temperatures, leading to tunability by phase transitions. We show that there is a 90° rotation of the magnetic anisotropy easy axis between p1 and p2, where p1 favors the in-plane and p2 the out-of-plane easy axis. Therefore, the magnetic anisotropy can be tuned by reversing the out-of-plane polarization. Our strategy provides a unique way toward strong magnetoelectric coupling and multistate memory.
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Affiliation(s)
- Zhichao Yu
- Institute of Applied Physics and Materials Engineering, University of Macau, Macao SAR 999708, P. R. China
| | - Haoyun Bai
- Institute of Applied Physics and Materials Engineering, University of Macau, Macao SAR 999708, P. R. China
| | - Bowen Li
- 2027 Laboratory, Tianfu Xinglong Lake Laboratory, Chengdu, Sichuan 610000, P. R. China
| | - Lun Li
- Institute of Applied Physics and Materials Engineering, University of Macau, Macao SAR 999708, P. R. China
| | - Hui Pan
- Institute of Applied Physics and Materials Engineering, University of Macau, Macao SAR 999708, P. R. China
- Department of Physics and Chemistry, Faculty of Science and Technology, University of Macau, Macao SAR 999078, P. R. China
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5
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Albino A, Buonocore F, Celino M, Totti F. The chimera of 2D- and 1D-graphene magnetization by hydrogenation or fluorination: critically revisiting old schemes and proposing new ones by ab initio methods. NANOSCALE ADVANCES 2024; 6:1106-1121. [PMID: 38356622 PMCID: PMC10863704 DOI: 10.1039/d3na01008b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Accepted: 01/06/2024] [Indexed: 02/16/2024]
Abstract
Graphene is an ideal candidate material for spintronics due to its layered structure and peculiar electronic structure. However, in its pristine state, the production of magnetic moments is not trivial. A very appealing approach is the chemical modification of pristine graphene. The main obstacle is the control of the geometrical features and the selectivity of functional groups. The lack of a periodic functionalization pattern of the graphene sheet prevents, therefore, the achievement of long-range magnetic order, thus limiting its use in spintronic devices. In such regards, the stability and the magnitude of the instilled magnetic moment depending on the size and shape of in silico designed graphane islands and ribbons embedded in graphene matrix will be computed and analysed. Our findings thus suggest that a novel and magneto-active graphene derivative nanostructure could become achievable more easily than extended graphone or nanoribbons, with a strong potential for future spintronics applications with a variable spin-current density.
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Affiliation(s)
- Andrea Albino
- Dipartimento di Chimica "Ugo Schiff" & INSTM RU, Università degli Studi di Firenze Via della Lastruccia 3 Sesto Fiorentino (FI) 50019 Italy
| | - Francesco Buonocore
- Agenzia nazionale per le nuove tecnologie, l'energia e lo sviluppo economico sostenibile (ENEA), Casaccia Research Centre Roma 00123 Italy
| | - Massimo Celino
- Agenzia nazionale per le nuove tecnologie, l'energia e lo sviluppo economico sostenibile (ENEA), Casaccia Research Centre Roma 00123 Italy
| | - Federico Totti
- Dipartimento di Chimica "Ugo Schiff" & INSTM RU, Università degli Studi di Firenze Via della Lastruccia 3 Sesto Fiorentino (FI) 50019 Italy
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6
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Gul SH, Alrebdi TA, Idrees M, Amin B. Tunable electronic structures, Rashba splitting, and optical and photocatalytic responses of MSSe-PtO 2 (M = Mo, W) van der Waals heterostructures. NANOSCALE ADVANCES 2023; 5:5829-5837. [PMID: 37881719 PMCID: PMC10597551 DOI: 10.1039/d3na00347g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/21/2023] [Accepted: 08/23/2023] [Indexed: 10/27/2023]
Abstract
Binding energies, AIMD simulation and phonon spectra confirm both the thermal and dynamical stabilities of model-I and model-II of MSSe-PtO2 (M = Mo, W) vdWHs. An indirect type-II band alignment in both the models of MSSe-PtO2 vdWHs and a larger Rashba spin splitting in model-II than in model-I provide a platform for experimental design of MSSe-PtO2 vdWHs for optoelectronics and spintronic device applications. Transfer of electrons from the MSSe layer to the PtO2 layer at the interface of MSSe-PtO2 vdWHs makes MSSe (PtO2) p(n)-type. Large absorption in the visible region of MoSSe-PtO2 vdWHs, while blue shifts in WSSe-PtO2 vdWHs are observed. In the case of model-II of MSSe-PtO2 vdWHs, a further blue shift is observed. Furthermore, the photocatalytic response shows that MSSe-PtO2 vdWHs cross the standard water redox potentials confirming their capability to split water into H+/H2 and O2/H2O.
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Affiliation(s)
- Sadia H Gul
- Department of Physics, Abbottabad University of Science & Technology Abbottabad 22010 Pakistan +92-333-943-665 +92-333-943-665
| | - Tahani A Alrebdi
- Department of Physics, College of Science, Princess Nourah Bint Abdulrahman University PO Box 84428 Riyadh 11671 Saudi Arabia
| | - M Idrees
- School of Physics and Electronic Engineering, Jiangsu University Zhenjiang 212013 Jiangsu China
| | - B Amin
- Department of Physics, Abbottabad University of Science & Technology Abbottabad 22010 Pakistan +92-333-943-665 +92-333-943-665
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7
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Li J, Li X, Yang J. Chemically Controlled Reversible Magnetic Phase Transition in Two-Dimensional Organometallic Lattices. NANO LETTERS 2023; 23:9126-9132. [PMID: 37781926 DOI: 10.1021/acs.nanolett.3c03060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/03/2023]
Abstract
Developing an efficient method to reversibly control materials' spin order is urgently needed but challenging in spintronics. Though various physical field control methods have been advancing, the chemical control of spin is little exploited. Here, we propose a chemical means for such spin manipulation, i.e., utilizing the well-known lactim-lactam tautomerization to reversibly modulate the magnetic phase transition in two-dimensional (2D) organometallic lattices. The proposal is verified by theoretically designing several 2D organometallic frameworks with antiferromagnetic to ferrimagnetic spin order transformation modulated by lactim-lactam tautomerization on organic linkers. The transition originates from the change in spin states of organic linkers (from singlet to doublet) via tautomerization. Such a transition further switches materials' electronic structures from normal semiconductors with zero spin polarization to bipolar magnetic semiconductors with valence and conduction band edges 100% spin polarized in opposite spin channels. Moreover, the magnitude of magnetic anisotropy energy also enhances by 5- to 9-fold.
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Affiliation(s)
- Junyao Li
- Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Xingxing Li
- Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
- Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026, China
- Hefei National Laboratory, University of Science and Technology of China, Hefei 230088, China
| | - Jinlong Yang
- Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
- Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026, China
- Hefei National Laboratory, University of Science and Technology of China, Hefei 230088, China
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8
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Gao R, Beladi-Mousavi SM, Salinas G, Garrigue P, Zhang L, Kuhn A. Spatial Precision Tailoring the Catalytic Activity of Graphene Monolayers for Designing Janus Swimmers. NANO LETTERS 2023; 23:8180-8185. [PMID: 37642420 DOI: 10.1021/acs.nanolett.3c02314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/31/2023]
Abstract
Graphene monolayers have interesting applications in many fields due to their intrinsic physicochemical properties, especially when they can be postmodified with high precision. Herein, we describe the highly site-selective functionalization of freestanding graphene monolayers with platinum (Pt) clusters by bipolar electrochemistry. The deposition of such metal spots leads to catalytically active hybrid two-dimensional (2D) nanomaterials. Their catalytic functionality is illustrated by the spatially controlled decomposition of hydrogen peroxide, inducing motion at the water/air interface due to oxygen bubble evolution. A series of such 2D Janus structures with Pt deposition at predefined positions (corners and edges) is studied with respect to the generation of autonomous motion. The type and speed of motion can be fine-tuned by controlling the deposition time and location of the Pt clusters. These proof-of-principle experiments indicate that this type of hybrid 2D object opens up interesting perspectives in terms of applications, such as environmental detection or remediation.
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Affiliation(s)
- Ruchao Gao
- Engineering Research Center for Nanomaterials, Henan University, 475000 Kaifeng, China
- University of Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, 33607 Pessac, France
| | | | - Gerardo Salinas
- University of Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, 33607 Pessac, France
| | - Patrick Garrigue
- University of Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, 33607 Pessac, France
| | - Lin Zhang
- Engineering Research Center for Nanomaterials, Henan University, 475000 Kaifeng, China
| | - Alexander Kuhn
- Engineering Research Center for Nanomaterials, Henan University, 475000 Kaifeng, China
- University of Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, 33607 Pessac, France
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9
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Thu Tran HT, Nguyen PM, Van Nguyen H, Chong TV, Bubanja V, Van Vo H. Atomistic Study of the Bandgap Engineering of Two-Dimensional Silicon Carbide by Hydrogenation. ACS OMEGA 2023; 8:25424-25431. [PMID: 37483209 PMCID: PMC10357425 DOI: 10.1021/acsomega.3c02914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Accepted: 06/15/2023] [Indexed: 07/25/2023]
Abstract
This work studied hydrogen adsorption by a two-dimensional silicon carbide using a combined molecular dynamics and density functional theory approach. The geometrical properties of partially and fully hydrogenated structures were investigated, considering the effect of zero-point energy. The preferred hydrogen atom location is on top of silicon atoms. The hydrogen interaction energies were obtained for the first time as the attractive force. For fully hydrogenated 2D SiC, the chair-like conformer is the most stable configuration, and the next is the boat-like conformer, while the table-like structure is not stable. The coverage and arrangement of the adsorbed hydrogen atoms significantly influence the values of the direct/indirect bandgaps of the considered systems, increasing the bandgap to 4.07, 3.64, and 4.41 eV for chair-like, table-like, and boat-like, respectively. Their dynamical stability was investigated by phonon dispersion calculations. The obtained results can serve as a guide for the application of hydrogenated two-dimensional silicon carbide in optoelectronic applications in manufacturing innovation.
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Affiliation(s)
- Hanh Thi Thu Tran
- Laboratory
of Computational Physics, Faculty of Applied Science, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District
10, Ho Chi Minh City 70000, Vietnam
- Vietnam
National University Ho Chi Minh City, Linh Trung Ward, Thu Duc District, Ho Chi
Minh City 70000, Vietnam
| | - Phi Minh Nguyen
- Laboratory
of Computational Physics, Faculty of Applied Science, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District
10, Ho Chi Minh City 70000, Vietnam
- Vietnam
National University Ho Chi Minh City, Linh Trung Ward, Thu Duc District, Ho Chi
Minh City 70000, Vietnam
| | - Hoa Van Nguyen
- Laboratory
of Computational Physics, Faculty of Applied Science, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District
10, Ho Chi Minh City 70000, Vietnam
- Vietnam
National University Ho Chi Minh City, Linh Trung Ward, Thu Duc District, Ho Chi
Minh City 70000, Vietnam
| | - Tet Vui Chong
- Faculty
of Engineering and Quantity Surveying, INTI
International University, Persiaran Perdana BBN, Putra Nilai, Nilai 71800, Negeri Sembilan, Malaysia
| | - Vladimir Bubanja
- Measurement
Standards Laboratory of New Zealand, Callaghan Innovation, Lower Hutt, P.O. Box 31310, Wellington 5040, New Zealand
- The
Dodd-Walls Centre for Photonic and Quantum Technologies, University of Otago, 730 Cumberland Street, Dunedin 9016, New Zealand
| | - Hoang Van Vo
- Laboratory
of Computational Physics, Faculty of Applied Science, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District
10, Ho Chi Minh City 70000, Vietnam
- Vietnam
National University Ho Chi Minh City, Linh Trung Ward, Thu Duc District, Ho Chi
Minh City 70000, Vietnam
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10
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Zou Y, Wang X, Liu L, Song T, Liu Z, Cui X. First-Principles Study on Mechanical, Electronic, and Magnetic Properties of Room Temperature Ferromagnetic Half-Metal MnNCl Monolayer. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:nano13111712. [PMID: 37299615 DOI: 10.3390/nano13111712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 05/18/2023] [Accepted: 05/22/2023] [Indexed: 06/12/2023]
Abstract
Two-dimensional ferromagnetic (FM) half-metals are highly desirable for the development of multifunctional spintronic nano-devices due to their 100% spin polarization and possible interesting single-spin electronic states. Herein, using first-principles calculations based on density functional theory (DFT) with the Perdew-Burke-Ernzerhof (PBE) functional, we demonstrate that the MnNCl monolayer is a promising FM half-metal for spintronics. Specifically, we systematically investigated its mechanical, magnetic, and electronic properties. The results reveal that the MnNCl monolayer has superb mechanic, dynamic, and thermal (ab initio molecular dynamics (AIMD) simulation at 900 K) stability. More importantly, its intrinsic FM ground state has a large magnetic moment (6.16 μB), a large magnet anisotropy energy (184.5 μeV), an ultra-high Curie temperature (952 K), and a wide direct band gap (3.10 eV) in the spin-down channel. Furthermore, by applying biaxial strain, the MnNCl monolayer can still maintain its half-metallic properties and shows an enhancement of magnetic properties. These findings establish a promising new two-dimensional (2D) magnetic half-metal material, which should expand the library of 2D magnetic materials.
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Affiliation(s)
- Yuxin Zou
- School of Physical Science and Technology, Inner Mongolia University, Hohhot 010021, China
| | - Xin Wang
- School of Physical Science and Technology, Inner Mongolia University, Hohhot 010021, China
| | - Liwei Liu
- School of Physical Science and Technology, Inner Mongolia University, Hohhot 010021, China
| | - Tielei Song
- School of Physical Science and Technology, Inner Mongolia University, Hohhot 010021, China
| | - Zhifeng Liu
- School of Physical Science and Technology, Inner Mongolia University, Hohhot 010021, China
| | - Xin Cui
- School of Physical Science and Technology, Inner Mongolia University, Hohhot 010021, China
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11
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Li C, Wang F, Cui B, Pan Z, Jia Y. Localized magnetic moment induced by boron adatoms chemisorbed on graphene. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2023; 35. [PMID: 37068487 DOI: 10.1088/1361-648x/accdad] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2023] [Accepted: 04/17/2023] [Indexed: 05/16/2023]
Abstract
Inducing local spin-polarization in pristine graphene is highly desirable and recent experiment shows that boron adatom chemical attachment to graphene exhibits local high spin state. Using hybrid exchange-correlation functional, we show that boron (B) monomer chemisorbed on the bridge site of graphene is energically favorable, and indeed induces a weak local spin-polarization ∼0.56μB. The localized magnetic moment can be attributed to the charge transfer from boron atom to graphene, resulting in local spin charge dominantly surrounding to the adsorbed B and neighboring carbon (C) atoms. We also surprisingly find that boron dimer can even much more stable upright anchor the same site of graphene, giving rise to sizable spin magnetic moment 2.00μB. Although the apparent spin state remains mainly contributed by Bpand Cporbitals as the case of boron monomer, the delicate and substantial charge transfer of theintra-dimerplays a fundamental role in producing such sizable local spin-polarization. We employed various van der Waals corrections to check and confirm the validity of appeared local spin-polarization. In terms of the almost identical simulated scanning tunneling microscope between boron monomer and dimer, we might tend to support the fact that boron dimer can also be chemisorbed on graphene with much larger and stable localized spin magnetic moment.
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Affiliation(s)
- Chong Li
- School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, People's Republic of China
| | - Fei Wang
- School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, People's Republic of China
| | - Bin Cui
- School of Physics, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, People's Republic of China
| | - Zhifeng Pan
- School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, People's Republic of China
| | - Yu Jia
- School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, People's Republic of China
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12
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Arhin TY, Jonathan A, Opoku F, Tandoh MA, Amankwah EA, Akoto O. Exposure and health risk assessment of transition metals in rice found on the Ghanaian market. ENVIRONMENTAL MONITORING AND ASSESSMENT 2023; 195:587. [PMID: 37074495 DOI: 10.1007/s10661-023-11167-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Accepted: 03/27/2023] [Indexed: 05/03/2023]
Abstract
This study investigates the concentration of transition metals in imported and local rice brands on sale in some Ghanaian markets and the biochemical influences on the health of the Ghanaian population. A comparative analysis with previous studies in Ghana reveals that levels of Fe (3.64-4.44 mg/kg), Cd (0.03 mg/kg) and Cu (14.07-38.13 mg/kg) in the current study are much lower than the 13.67-21.35, 1.67-3.01, and 14.07-38.13 mg/kg recorded for Fe, Cd, and Cu, respectively. Rice sold in the Ghanaian markets contained different transition metals of which some are essential (Zn, Cu, Mn, and Fe). The levels of transition metals, such as Mn, Zn, Cd, Cu, and Fe are in moderate concentrations, which are well within the maximum acceptable limit of the World Health Organization. This study has revealed that R5 and R9 from the USA and India, respectively, recorded hazard indices above the safe limit of 1 and can therefore have the potential to pose detrimental health complications to consumers in the long term.
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Affiliation(s)
- Theresa Yvonne Arhin
- Department of Chemistry, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Awewomom Jonathan
- Department of Chemistry, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Francis Opoku
- Department of Chemistry, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana.
| | - Marina Aferiba Tandoh
- Department of Biochemistry and Biotechnology, Human Nutrition and Dietetics Unit, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Emmanuel Adu Amankwah
- Food Science and Technology Department, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Osei Akoto
- Department of Chemistry, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana.
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13
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Khan I, Hong J. Enhanced Curie temperature in partially decorated CrSnSe 3 monolayer with alkali metals (Li, Na, and K). Phys Chem Chem Phys 2023; 25:9437-9444. [PMID: 36928827 DOI: 10.1039/d2cp05747f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
Abstract
A two-dimensional ferromagnetic layer with a large Curie temperature is highly desired for spintronics applications. Herein, we investigated the effect of the partial decoration of the CrSnSe3 monolayer with alkali metals Li, Na, and K on the structure, electronic and magnetic properties. The calculated formation energy, phonon dispersion curves, and ab initio molecular dynamics indicated that the decorated CrSnSe3 layers are stable and can be fabricated. The Li, Na, and K decorated systems display semiconducting band features, with bandgaps of 0.53, 0.55, and 0.55 eV, respectively, with the HSE06 hybrid functional. We found a ferromagnetic ground state and an in-plane magnetic anisotropy of -2.12, -2.42, and -2.39 meV per cell in the Li, Na, and K-decorated systems, respectively. Based on Monte Carlo Simulations, we obtained largely enhanced Curie temperatures of 241, 256, and 265 K in the Li, Na, and K decorated systems, respectively. Our findings suggest that the decorated layers could be used as potential candidates for spintronics applications.
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Affiliation(s)
- Imran Khan
- Department of Physics, Pukyong National University, Busan 608-737, Korea.
| | - Jisang Hong
- Department of Physics, Pukyong National University, Busan 608-737, Korea.
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14
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Wu Y, Li J, Liu Y. Two-dimensional chalcogenide-based ferromagnetic semiconductors. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2022; 35:083002. [PMID: 36540916 DOI: 10.1088/1361-648x/acaa7e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Accepted: 12/09/2022] [Indexed: 06/17/2023]
Abstract
Two-dimensional (2D) magnetic materials draw an enormous amount of attention due to their novel physical properties and potential spintronics device applications. Room-temperature ferromagnetic (FM) semiconductors have long been pursued in 2D magnetic materials, which show a long range magnetic order down to atomic-layer thickness. The intrinsic ferromagnetism has been predicted in a series of 2D materials and verified in experiments and the magnetism can be modulated by multiple physical fields, exhibiting promising application prospects. In this review, we overview several types of 2D chalcogenide-based FM semiconductors discovered in recent years. We summary and compare their basic physical properties, including the crystal structures, electronic structures, and mechanical stability. The 2D magnetism can be described by several physical models. We also focus on the recent progresses about theoretical prediction of FM semiconductors and experimental observation of external-field regulation. Most of investigations have shown that 2D chalcogenide-based FM semiconductors have relatively high Curie temperature (Tc) and structural stability. These materials are promising to realize the room-temperature ferromagnetism in atomic-layer thickness, which is significant to design spintronics devices.
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Affiliation(s)
- Yanling Wu
- State Key Laboratory of Metastable Materials Science and Technology & Key Laboratory for Microstructural Material Physics of Hebei Province, School of Science, Yanshan University, Qinhuangdao 066004, People's Republic of China
| | - Jun Li
- State Key Laboratory of Metastable Materials Science and Technology & Key Laboratory for Microstructural Material Physics of Hebei Province, School of Science, Yanshan University, Qinhuangdao 066004, People's Republic of China
| | - Yong Liu
- State Key Laboratory of Metastable Materials Science and Technology & Key Laboratory for Microstructural Material Physics of Hebei Province, School of Science, Yanshan University, Qinhuangdao 066004, People's Republic of China
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15
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Khuong Dien V, Li WB, Lin KI, Thi Han N, Lin MF. Electronic and optical properties of graphene, silicene, germanene, and their semi-hydrogenated systems. RSC Adv 2022; 12:34851-34865. [PMID: 36540216 PMCID: PMC9724213 DOI: 10.1039/d2ra06722f] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Accepted: 11/28/2022] [Indexed: 09/15/2023] Open
Abstract
We investigate the geometric, electric, and optical properties of two-dimensional honeycomb lattices using first-principles simulations. The main focus of this work is on the similarities and differences in their characteristics, as well as the delicate connection of orbital hybridizations and spin-polarizations with electronic and optical properties. Graphene, silicene, germanene, and their semi-hydrogenated systems, in turn, display sp2, sp2-sp3, and sp3s hybridizations. These bonding configurations are critical factors affecting the geometric structure, the electronic band structure, van Hove singularities in density of states, the magnetic configurations, the dielectric functions, and energy loss functions. Furthermore, the meta-stable and stable exciton states are expected to survive in pristine and semi-hydrogenated group IV monolayers, respectively. The theoretical predictions established in this work are important not only for basic science but also for high-tech applications.
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Affiliation(s)
- Vo Khuong Dien
- Department of Physics, National Cheng Kung University 701 Tainan Taiwan
| | - Wei-Bang Li
- Department of Physics, National Cheng Kung University 701 Tainan Taiwan
| | - Kuang-I Lin
- Core Facility Center, National Cheng Kung University 701 Tainan Taiwan
| | - Nguyen Thi Han
- Department of Physics, National Cheng Kung University 701 Tainan Taiwan
| | - Ming-Fa Lin
- Department of Physics, National Cheng Kung University 701 Tainan Taiwan
- Hierarchical Green-Energy Material (Hi-GEM) Research Center, National Cheng Kung University 701 Tainan Taiwan
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16
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Vasiliev VP, Kabachkov EN, Kulikov AV, Manzhos RA, Morozov IG, Shulga YM. Unexpected Room Temperature Ferromagnetism of a Ball-Milled Graphene Oxide-Melamine Mixture. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27227698. [PMID: 36431798 PMCID: PMC9692776 DOI: 10.3390/molecules27227698] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 10/15/2022] [Accepted: 11/06/2022] [Indexed: 11/11/2022]
Abstract
Nitrogen-doped carbon nanomaterial (NDCNM) was synthesized by grinding a mixture of graphene oxide and melamine in a planetary mill with both balls and milling chamber of zirconium dioxide. In the electron spin resonance spectrum of NDCNM, a broad signal with g = 2.08 was observed in addition to a narrow signal at g = 2.0034. In the study using a vibrating-sample magnetometer, the synthesized material is presumably a ferromagnet with a coercive force of 100 Oe. The specific magnetization at 10,000 Oe is approximately 0.020 and 0.055 emu/g at room temperature and liquid nitrogen temperature, respectively.
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Affiliation(s)
- Vladimir P. Vasiliev
- Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry of RAS, Acad. Semenov Ave., 1, 142432 Chernogolovka, Russia
| | - Eugene N. Kabachkov
- Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry of RAS, Acad. Semenov Ave., 1, 142432 Chernogolovka, Russia
| | - Alexander V. Kulikov
- Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry of RAS, Acad. Semenov Ave., 1, 142432 Chernogolovka, Russia
| | - Roman A. Manzhos
- Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry of RAS, Acad. Semenov Ave., 1, 142432 Chernogolovka, Russia
| | - Iurii G. Morozov
- Merzhanov Institute of Structural Macrokinetics and Materials Science of RAS, Acad. Osipyan St., 8, 142432 Chernogolovka, Russia
| | - Yury M. Shulga
- Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry of RAS, Acad. Semenov Ave., 1, 142432 Chernogolovka, Russia
- Department of Functional Polymer Materials, National University of Science and Technology MISIS, Leninsky Ave., 4, 119049 Moscow, Russia
- Correspondence:
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17
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Tailoring the Properties of Ni(111)/Graphone Interfaces by Intercalation of Al and Na: A DFT Study. Mol Vis 2022. [DOI: 10.3390/c8040062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
With the incredible discovery of graphene (Gr), all of the properties studied to date suggest that it has promising applications in the development of semiconductor, spintronic, insulating, and polymer materials. However, efforts are still underway to fully understand the nature of metal–graphone(GrH) interaction in order to offer better scope for tuning the electronic and magnetic properties, which can be performed by intercalation of atoms via metal support on graphene. We chose metal atoms belonging to the s and p blocks, namely Na and Al, respectively, as the intercalating atoms. Herein, the maximum coverage of a monolayer of Na and Al was comparatively studied on a Ni(111) surface. Significant changes in the magnetic and electronic properties at the Ni(111)/graphone interface were observed upon intercalation. Of the two intercalating metal atoms, Na proved to be more effective, such that the magnetic properties of the surface Ni were only slightly decreased, and the graphone also showed better magnetic properties than in the absence of Na.
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18
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Magnetic properties of FePc sheet modified by the adsorption of gas molecules. COMPUT THEOR CHEM 2022. [DOI: 10.1016/j.comptc.2022.113793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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19
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Liang S, Gao P, Wang A, Zeng C, Bao G, Tian D. Insights into the influence of functional groups on the properties of graphene from first‐principles calculations. J PHYS ORG CHEM 2022. [DOI: 10.1002/poc.4387] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Sihao Liang
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization Kunming University of Science and Technology Kunming China
- Faculty of Metallurgy and Energy Engineering Kunming University of Science and Technology Kunming China
| | - Peng Gao
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization Kunming University of Science and Technology Kunming China
- Faculty of Metallurgy and Energy Engineering Kunming University of Science and Technology Kunming China
| | - An Wang
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization Kunming University of Science and Technology Kunming China
- Faculty of Metallurgy and Energy Engineering Kunming University of Science and Technology Kunming China
| | - Chunhua Zeng
- Faculty of Science Kunming University of Science and Technology Kunming China
| | - Guirong Bao
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization Kunming University of Science and Technology Kunming China
- Faculty of Metallurgy and Energy Engineering Kunming University of Science and Technology Kunming China
| | - Dong Tian
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization Kunming University of Science and Technology Kunming China
- Faculty of Metallurgy and Energy Engineering Kunming University of Science and Technology Kunming China
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20
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Adsorption and Sensing Properties of Formaldehyde on Chemically Modified Graphene Surfaces. CRYSTALS 2022. [DOI: 10.3390/cryst12040553] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Chemically modifying graphene (such as chemical doping) is a commonly used method to improve its formaldehyde sensing properties, but the microscopic mechanisms of heteroatoms in the adsorption and sensing process are still unclear. In this paper, the adsorption and sensing properties of formaldehyde on graphene surfaces modified by X doping (X = B, N, O, P, S, Mg and Al) were systematically investigated by first-principles calculations. The adsorption geometries, adsorption energies, charge transfers, and electronic structures were obtained and analyzed. The adsorption strengths of HCHO molecule on the Mg- and Al-doped graphene surfaces were stronger than those of non-metal (B, N, O, P and S)-doped cases. These results showed that the Mg- or Al-doped graphene was better for HCHO detecting than the non-metal-doped graphene systems. The sensing properties were simulated by theNEGF method for the two-probe nano-sensors constructed from Al- and Mg-doped graphene. The maximum sensing responses of nano-sensors based on Al- and Mg-doped graphene were obtained to be 107% and 60%, respectively. The present study supplies a theoretical basis for designing superior graphene-based HCHO gas sensors.
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21
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Betti MG, Placidi E, Izzo C, Blundo E, Polimeni A, Sbroscia M, Avila J, Dudin P, Hu K, Ito Y, Prezzi D, Bonacci M, Molinari E, Mariani C. Gap Opening in Double-Sided Highly Hydrogenated Free-Standing Graphene. NANO LETTERS 2022; 22:2971-2977. [PMID: 35294200 PMCID: PMC9011389 DOI: 10.1021/acs.nanolett.2c00162] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Conversion of free-standing graphene into pure graphane─where each C atom is sp3 bound to a hydrogen atom─has not been achieved so far, in spite of numerous experimental attempts. Here, we obtain an unprecedented level of hydrogenation (≈90% of sp3 bonds) by exposing fully free-standing nanoporous samples─constituted by a single to a few veils of smoothly rippled graphene─to atomic hydrogen in ultrahigh vacuum. Such a controlled hydrogenation of high-quality and high-specific-area samples converts the original conductive graphene into a wide gap semiconductor, with the valence band maximum (VBM) ∼ 3.5 eV below the Fermi level, as monitored by photoemission spectromicroscopy and confirmed by theoretical predictions. In fact, the calculated band structure unequivocally identifies the achievement of a stable, double-sided fully hydrogenated configuration, with gap opening and no trace of π states, in excellent agreement with the experimental results.
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Affiliation(s)
- Maria Grazia Betti
- Physics
Department, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy
- . Phone: +39 06 49914389
| | - Ernesto Placidi
- Physics
Department, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Chiara Izzo
- Physics
Department, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Elena Blundo
- Physics
Department, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Antonio Polimeni
- Physics
Department, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Marco Sbroscia
- Physics
Department, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - José Avila
- Synchrotron
SOLEIL, Université Paris-Saclay, Saint Aubin, BP 48, 91192 Gif sur Yvette, France
| | - Pavel Dudin
- Synchrotron
SOLEIL, Université Paris-Saclay, Saint Aubin, BP 48, 91192 Gif sur Yvette, France
| | - Kailong Hu
- School
of Materials Science and Engineering and Institute of Materials Genome
& Big Data, Harbin Institute of Technology, Shenzhen 518055, P.R. China
| | - Yoshikazu Ito
- Institute
of Applied Physics, Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba 305-8573, Japan
| | - Deborah Prezzi
- S3,
Istituto Nanoscienze-CNR, Via Campi 213/A, 41125 Modena, Italy
- .
Phone: +39 059 2055314
| | - Miki Bonacci
- S3,
Istituto Nanoscienze-CNR, Via Campi 213/A, 41125 Modena, Italy
- Dipartimento
di Scienze Fisiche, Informatiche e Matematiche (FIM), Università degli Studi di Modena e Reggio Emilia, 41125 Modena, Italy
| | - Elisa Molinari
- S3,
Istituto Nanoscienze-CNR, Via Campi 213/A, 41125 Modena, Italy
- Dipartimento
di Scienze Fisiche, Informatiche e Matematiche (FIM), Università degli Studi di Modena e Reggio Emilia, 41125 Modena, Italy
| | - Carlo Mariani
- Physics
Department, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy
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22
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Liu H, Feng K, Lu H, Meng X. First-principles calculations of the BeO monolayer with chemical functionalization. Phys Chem Chem Phys 2022; 24:7797-7804. [PMID: 35297445 DOI: 10.1039/d1cp05640a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Recently, extensive experimental and theoretical studies on two-dimensional materials have attracted enormous interest in exploring the properties of these materials by decorating their surfaces. In the present work, we present a detailed investigation of the structures, and electronic and magnetic properties of pristine, hydrogenated, and fluorinated BeO monolayers using the ab initio density functional theory approach. Structurally, the most stable adsorption sites are directly above the host Be atom for half-hydrogenation, above the middle of the Be-O bond for half-fluorination, and directly above the host Be atom and below the host O atom for full-hydrogenation and full-fluorination. Moreover, the electronic and magnetic properties of the BeO monolayer exhibit high sensitivity to chemical functionalization: half-hydrogenation induces nonmagnetic-magnetic transition and the reduction of the band gap reaches about 75%. Full-hydrogenation results in metallization of the BeO monolayer. Half-fluorination makes the BeO monolayer a 100% spin polarized material regardless of the adsorption site. However, depending on different adsorption sites, full-fluorination can produce either magnetically half-metallic or nonmagnetic semiconductor structures. These results demonstrate that the tunability of the electronic and magnetic properties of the BeO monolayer can be realized by chemical functionalization for future nano-electronic and spintronic device applications.
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Affiliation(s)
- Hanlu Liu
- College of Engineering and Applied Sciences, Jiangsu Key Laboratory of Artificial Functional Materials, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China.
| | - Kehan Feng
- College of Engineering and Applied Sciences, Jiangsu Key Laboratory of Artificial Functional Materials, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China.
| | - Haiming Lu
- College of Engineering and Applied Sciences, Jiangsu Key Laboratory of Artificial Functional Materials, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China.
| | - Xiangkang Meng
- College of Engineering and Applied Sciences, Jiangsu Key Laboratory of Artificial Functional Materials, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China.
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23
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Kumar N, Chamoli P, Misra M, Manoj MK, Sharma A. Advanced metal and carbon nanostructures for medical, drug delivery and bio-imaging applications. NANOSCALE 2022; 14:3987-4017. [PMID: 35244647 DOI: 10.1039/d1nr07643d] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Nanoparticles (NPs) offer great promise for biomedical, environmental, and clinical applications due to their several unique properties as compared to their bulk counterparts. In this review article, we overview various types of metal NPs and magnetic nanoparticles (MNPs) in monolithic form as well as embedded into polymer matrices for specific drug delivery and bio-imaging fields. The second part of this review covers important carbon nanostructures that have gained tremendous attention recently in such medical applications due to their ease of fabrication, excellent biocompatibility, and biodegradability at both cellular and molecular levels for phototherapy, radio-therapeutics, gene-delivery, and biotherapeutics. Furthermore, various applications and challenges involved in the use of NPs as biomaterials are also discussed following the future perspectives of the use of NPs in biomedicine. This review aims to contribute to the applications of different NPs in medicine and healthcare that may open up new avenues to encourage wider research opportunities across various disciplines.
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Affiliation(s)
- Neeraj Kumar
- Department of Metallurgical Engineering, SOE, O.P. Jindal University, Raigarh 496109, India
- Department of Metallurgical and Materials Engineering, NIT Raipur, Raipur, 492010, India
| | - Pankaj Chamoli
- School of Basic & Applied Sciences, Department of Physics, Shri Guru Ram Rai University, Dehradun-248001, Uttarakhand, India
| | - Mrinmoy Misra
- Department of Mechatronics, School of Automobile, Mechanical and Mechatronics, Manipal University Jaipur, 303007 Rajasthan, India
| | - M K Manoj
- Department of Metallurgical and Materials Engineering, NIT Raipur, Raipur, 492010, India
| | - Ashutosh Sharma
- Department of Materials Science and Engineering, Ajou University, Suwon-16499, South Korea.
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24
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Zhang Q, Zhang Y, Li Y, Fang D, Che J, Zhang E, Zhang P, Zhang S. An intrinsic room-temperature half-metallic ferromagnet in a metal-free PN 2 monolayer. Phys Chem Chem Phys 2022; 24:7077-7083. [PMID: 35262147 DOI: 10.1039/d2cp00010e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In spintronics, the embodiment of abundance availability, long spin relaxation time, complete spin-polarization and high Curie temperature (TC) in intrinsic metal-free half-metallic ferromagnets (MFHMFs) are highly desirable and challenging. In this work, employing density functional theory, we first propose a dynamically, thermally, and mechanically stable two-dimensional (2D) intrinsic MFHMF, i.e. a MoS2-like PN2 monolayer, which possesses not only completely spin-polarized half-metallicity, but also an above-room-temperature TC (385 K). The half-metallic gap is calculated to be 1.70 eV, which can effectively prevent the spin-flip transition caused by thermal agitation. The mechanism of magnetism in the PN2 monolayer is mainly derived from the p electron direct exchange interaction that separates from usual d-state magnetic materials. Moreover, the robustness of the ferromagnetism and half-metallicity is observed against an external strain and carrier (electron or hole) doping. Surprisingly, electron doping can effectively increase the Curie temperature of the PN2 monolayer. The proposed research work provides an insight that PN2 can be a promising candidate for realistic room-temperature metal-free spintronic applications.
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Affiliation(s)
- Quan Zhang
- MOE Key Lab for Nonequilibrium Synthesis and Modulation of Condensed Matter, School of Physics, Xi'an Jiaotong University, Xi'an, 710049, China.
| | - Yang Zhang
- MOE Key Lab for Nonequilibrium Synthesis and Modulation of Condensed Matter, School of Physics, Xi'an Jiaotong University, Xi'an, 710049, China.
| | - Ying Li
- MOE Key Lab for Nonequilibrium Synthesis and Modulation of Condensed Matter, School of Physics, Xi'an Jiaotong University, Xi'an, 710049, China.
| | - Dangqi Fang
- MOE Key Lab for Nonequilibrium Synthesis and Modulation of Condensed Matter, School of Physics, Xi'an Jiaotong University, Xi'an, 710049, China.
| | - Junwei Che
- MOE Key Lab for Nonequilibrium Synthesis and Modulation of Condensed Matter, School of Physics, Xi'an Jiaotong University, Xi'an, 710049, China.
| | - Erhu Zhang
- MOE Key Lab for Nonequilibrium Synthesis and Modulation of Condensed Matter, School of Physics, Xi'an Jiaotong University, Xi'an, 710049, China.
| | - Peng Zhang
- MOE Key Lab for Nonequilibrium Synthesis and Modulation of Condensed Matter, School of Physics, Xi'an Jiaotong University, Xi'an, 710049, China.
| | - Shengli Zhang
- MOE Key Lab for Nonequilibrium Synthesis and Modulation of Condensed Matter, School of Physics, Xi'an Jiaotong University, Xi'an, 710049, China.
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25
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Zhang S, Wu H, Yang L, Zhang G, Xie Y, Zhang L, Zhang W, Chang H. Two-dimensional magnetic atomic crystals. MATERIALS HORIZONS 2022; 9:559-576. [PMID: 34779810 DOI: 10.1039/d1mh01155c] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Two-dimensional (2D) magnetic crystals show many fascinating physical properties and have potential device applications in many fields. In this paper, the preparation, physical properties and device applications of 2D magnetic atomic crystals are reviewed. First, three preparation methods are presented, including chemical vapor deposition (CVD) molecular beam epitaxy (MBE) and single-crystal exfoliation. Second, physical properties of 2D magnetic atomic crystals, including ferromagnetism, antiferromagnetism, magnetic regulation and anomalous Hall effect are presented. Third, the application of 2D magnetic atomic crystals in heterojunctions reluctance and other aspects are briefly introduced. Finally, the future development direction and possible challenges of 2D magnetic atomic crystals are briefly addressed.
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Affiliation(s)
- Shanfei Zhang
- Center for Joining and Electronic Packaging, State Key Laboratory of Material Processing and Die & Mold Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China.
- Institute for Quantum Science and Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China
| | - Hao Wu
- Center for Joining and Electronic Packaging, State Key Laboratory of Material Processing and Die & Mold Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China.
- Institute for Quantum Science and Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China
| | - Li Yang
- Center for Joining and Electronic Packaging, State Key Laboratory of Material Processing and Die & Mold Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China.
- Institute for Quantum Science and Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China
| | - Gaojie Zhang
- Center for Joining and Electronic Packaging, State Key Laboratory of Material Processing and Die & Mold Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China.
- Institute for Quantum Science and Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China
| | - Yuanmiao Xie
- School of Microelectronics and Materials Engineering and School of Science, Guangxi University of Science and Technology, Liuzhou, China
| | - Liang Zhang
- School of Microelectronics and Materials Engineering and School of Science, Guangxi University of Science and Technology, Liuzhou, China
| | - Wenfeng Zhang
- Center for Joining and Electronic Packaging, State Key Laboratory of Material Processing and Die & Mold Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China.
- Institute for Quantum Science and Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China
| | - Haixin Chang
- Center for Joining and Electronic Packaging, State Key Laboratory of Material Processing and Die & Mold Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China.
- Institute for Quantum Science and Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China
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26
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Non-covalent interactions of graphene surface: Mechanisms and applications. Chem 2022. [DOI: 10.1016/j.chempr.2021.12.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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27
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Di B, Zhang P, Yin H, Han P, Wu H, Zhang G, Jin W, Wen X, Zhang W, Chang H. Highly-tunable ferromagnetism in Cr-doped layered van der Waals NiTe 2 crystals with high air stability. CrystEngComm 2022. [DOI: 10.1039/d2ce00734g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In the present work, tunable ferromagnetism can be introduced in NiTe2 crystals by Cr doping with high air-stability.
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Affiliation(s)
- Boyuan Di
- Institute for Quantum Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
- Center for Joining and Electronic Packaging, State Key Laboratory of Material Processing and Die & Mold Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Pengzhen Zhang
- Institute for Quantum Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
- Center for Joining and Electronic Packaging, State Key Laboratory of Material Processing and Die & Mold Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Hongfei Yin
- Institute for Quantum Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
- Center for Joining and Electronic Packaging, State Key Laboratory of Material Processing and Die & Mold Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Peng Han
- Institute for Quantum Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
- Center for Joining and Electronic Packaging, State Key Laboratory of Material Processing and Die & Mold Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Hao Wu
- Institute for Quantum Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
- Center for Joining and Electronic Packaging, State Key Laboratory of Material Processing and Die & Mold Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Gaojie Zhang
- Institute for Quantum Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
- Center for Joining and Electronic Packaging, State Key Laboratory of Material Processing and Die & Mold Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Wen Jin
- Institute for Quantum Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
- Center for Joining and Electronic Packaging, State Key Laboratory of Material Processing and Die & Mold Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Xiaokun Wen
- Institute for Quantum Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
- Center for Joining and Electronic Packaging, State Key Laboratory of Material Processing and Die & Mold Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Wenfeng Zhang
- Institute for Quantum Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
- Center for Joining and Electronic Packaging, State Key Laboratory of Material Processing and Die & Mold Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Haixin Chang
- Institute for Quantum Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
- Center for Joining and Electronic Packaging, State Key Laboratory of Material Processing and Die & Mold Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
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28
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Song Y, Qian K, Tao L, Wang Z, Guo H, Chen H, Zhang S, Zhang YY, Lin X, Pantelides ST, Du S, Gao HJ. Intrinsically Honeycomb-Patterned Hydrogenated Graphene. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2102687. [PMID: 34846103 DOI: 10.1002/smll.202102687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2021] [Revised: 09/28/2021] [Indexed: 06/13/2023]
Abstract
Since the advent of graphene ushered the era of 2D materials, many forms of hydrogenated graphene have been reported, exhibiting diverse properties ranging from a tunable bandgap to ferromagnetic ordering. Patterned hydrogenated graphene with micron-scale patterns has been fabricated by lithographic means. Here, successful millimeter-scale synthesis of an intrinsically honeycomb-patterned form of hydrogenated graphene on Ru(0001) by epitaxial growth followed by hydrogenation is reported. Combining scanning tunneling microscopy observations with density-functional-theory (DFT) calculations, it is revealed that an atomic-hydrogen layer intercalates between graphene and Ru(0001). The result is a hydrogen honeycomb structure that serves as a template for the final hydrogenation, which converts the graphene into graphane only over the template, yielding honeycomb-patterned hydrogenated graphene (HPHG). In effect, HPHG is a form of patterned graphane. DFT calculations find that the unhydrogenated graphene regions embedded in the patterned graphane exhibit spin-polarized edge states. This type of growth mechanism provides a new pathway for the fabrication of intrinsically patterned graphene-based materials.
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Affiliation(s)
- Yang Song
- Institute of Physics and University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, 100190, China
- Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing, 100190, China
| | - Kai Qian
- Institute of Physics and University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, 100190, China
- Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing, 100190, China
| | - Lei Tao
- Institute of Physics and University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, 100190, China
- Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing, 100190, China
| | - Zhenyu Wang
- Institute of Physics and University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, 100190, China
- Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing, 100190, China
| | - Hui Guo
- Institute of Physics and University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, 100190, China
- Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing, 100190, China
| | - Hui Chen
- Institute of Physics and University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, 100190, China
- Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing, 100190, China
| | - Shuai Zhang
- Institute of Physics and University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, 100190, China
- Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing, 100190, China
| | - Yu-Yang Zhang
- Institute of Physics and University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, 100190, China
- Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing, 100190, China
- CAS Center for Excellence in Topological Quantum Computation, University of Chinese Academy of Sciences, Beijing, 100190, China
- Songshan Lake Materials Laboratory, Dongguan, Guangdong, 523808, China
| | - Xiao Lin
- Institute of Physics and University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, 100190, China
- Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing, 100190, China
- CAS Center for Excellence in Topological Quantum Computation, University of Chinese Academy of Sciences, Beijing, 100190, China
- Songshan Lake Materials Laboratory, Dongguan, Guangdong, 523808, China
| | - Sokrates T Pantelides
- Institute of Physics and University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, 100190, China
- Department of Physics and Astronomy and Department of Electrical and Computer Engineering, Vanderbilt University, Nashville, TN, 37235, USA
| | - Shixuan Du
- Institute of Physics and University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, 100190, China
- Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing, 100190, China
- CAS Center for Excellence in Topological Quantum Computation, University of Chinese Academy of Sciences, Beijing, 100190, China
- Songshan Lake Materials Laboratory, Dongguan, Guangdong, 523808, China
| | - Hong-Jun Gao
- Institute of Physics and University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, 100190, China
- Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing, 100190, China
- CAS Center for Excellence in Topological Quantum Computation, University of Chinese Academy of Sciences, Beijing, 100190, China
- Songshan Lake Materials Laboratory, Dongguan, Guangdong, 523808, China
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29
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Linh TPT, Hieu NN, Phuc HV, Nguyen CQ, Vinh PT, Thai NQ, Hieu NV. First-principles insights onto structural, electronic and optical properties of Janus monolayers CrXO (X = S, Se, Te). RSC Adv 2021; 11:39672-39679. [PMID: 35494112 PMCID: PMC9044576 DOI: 10.1039/d1ra07876c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Accepted: 12/07/2021] [Indexed: 11/21/2022] Open
Abstract
The lacking of the vertical mirror symmetry in Janus structures compared to their conventional metal monochalcogenides/dichalcogenides leads to their characteristic properties, which are predicted to play significant roles for various promising applications. In this framework, we systematically examine the structural, mechanical, electronic, and optical properties of the two-dimensional 2H Janus CrXO (X = S, Se, Te) monolayers by using first-principles calculation method based on density functional theory. The obtained results from optimization, phonon spectra, and elastic constants demonstrate that all three Janus monolayers present good structural and mechanical stabilities. The calculated elastic constants also indicate that the Janus CrTeO monolayer is much mechanically flexible than the other two monolayers due to its low Young's modulus value. The metallic behavior is observed at the ground state for the Janus CrSeO and CrTeO monolayers in both PBE and HSE06 levels. Meanwhile, the Janus CrSO monolayer exhibits a low indirect semiconducting characteristic. The bandgap of CrSO after the correction of HSE06 hybrid functional is the average value of its binary transition metal dichalcogenides. The broad absorption spectrum of CrSO reveals the wide activated range from the visible to near-ultraviolet region. Our findings not only present insight into the brand-new Janus CrXO monolayers but can also motivate experimental research for several applications in optoelectric and nanoelectromechanical devices.
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Affiliation(s)
- Tran P T Linh
- Faculty of Physics, Hanoi National University of Education Ha Noi 100000 Viet Nam
| | - Nguyen N Hieu
- Institute of Research and Development, Duy Tan University Da Nang 550000 Viet Nam .,Faculty of Natural Sciences, Duy Tan University Da Nang 550000 Viet Nam
| | - Huynh V Phuc
- Division of Theoretical Physics, Dong Thap University Cao Lanh 870000 Viet Nam
| | - Cuong Q Nguyen
- Institute of Research and Development, Duy Tan University Da Nang 550000 Viet Nam .,Faculty of Natural Sciences, Duy Tan University Da Nang 550000 Viet Nam
| | - Pham T Vinh
- Division of Theoretical Physics, Dong Thap University Cao Lanh 870000 Viet Nam
| | - Nguyen Q Thai
- Division of Theoretical Physics, Dong Thap University Cao Lanh 870000 Viet Nam
| | - Nguyen V Hieu
- Physics Department, The University of Danang - University of Science and Education Da Nang 550000 Viet Nam
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30
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Yang L, Xiao W, Wang J, Li X, Wang L. Tunable formaldehyde sensing properties of palladium cluster decorated graphene. RSC Adv 2021; 11:37120-37130. [PMID: 35496415 PMCID: PMC9043533 DOI: 10.1039/d1ra06940c] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Accepted: 11/12/2021] [Indexed: 12/31/2022] Open
Abstract
The ability to tune the adsorption strength of the targeted gas on sensing materials is crucial for sensing applications. By employing first-principles calculations the adsorption and sensing properties of HCHO on small Pd n (n = 1-6) cluster decorated graphene have been systematically investigated. The adsorption energy is found to depend on the size of the Pd n cluster and can be tuned in a wide range from -0.68 eV on Pd(111) to -1.98 eV on the Pd3/graphene system. We also find that the Pd n /graphene (n = 5 and 6) systems have an appropriate adsorption energy for HCHO gas sensing. The current-voltage curves are calculated by the non-equilibrium Green's function method for the two-probe nano-sensor devices along both the armchair and zigzag directions. The devices constructed with Pd n /graphene (n = 5 and 6), having the highest absolute response over 20% at small voltages, should be applicable for HCHO detection. This work provides a theoretical basis for exploring potential applications of metal cluster decorated graphene for gas sensing.
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Affiliation(s)
- Lunwei Yang
- State Key Laboratory of Nonferrous Metals and Processes, GRINM Group Co., Ltd. Beijing 100088 P. R. China .,GRIMAT Engineering Institute Co., Ltd. Beijing 101407 P. R. China.,General Research Institute for Nonferrous Metals Beijing 100088 P. R. China.,Department of Materials Physics and Chemistry, School of Materials Science and Engineering, Key Laboratory for Anisotropy and Texture of Materials, Ministry of Education, Northeastern University Shenyang 110819 P. R. China
| | - Wei Xiao
- State Key Laboratory of Nonferrous Metals and Processes, GRINM Group Co., Ltd. Beijing 100088 P. R. China .,GRIMAT Engineering Institute Co., Ltd. Beijing 101407 P. R. China.,General Research Institute for Nonferrous Metals Beijing 100088 P. R. China
| | - Jianwei Wang
- State Key Laboratory of Nonferrous Metals and Processes, GRINM Group Co., Ltd. Beijing 100088 P. R. China .,GRIMAT Engineering Institute Co., Ltd. Beijing 101407 P. R. China.,General Research Institute for Nonferrous Metals Beijing 100088 P. R. China
| | - Xiaowu Li
- Department of Materials Physics and Chemistry, School of Materials Science and Engineering, Key Laboratory for Anisotropy and Texture of Materials, Ministry of Education, Northeastern University Shenyang 110819 P. R. China
| | - Ligen Wang
- State Key Laboratory of Nonferrous Metals and Processes, GRINM Group Co., Ltd. Beijing 100088 P. R. China .,GRIMAT Engineering Institute Co., Ltd. Beijing 101407 P. R. China.,General Research Institute for Nonferrous Metals Beijing 100088 P. R. China
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31
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Facile preparation of hydrogenated graphene by hydrothermal methods and the investigation of its ferromagnetism. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2021.03.062] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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32
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He Z, Gao X, Zhang D, Lu P, Wang X, Kalaswad M, Rutherford BX, Wang H. Tailorable multifunctionalities in ultrathin 2D Bi-based layered supercell structures. NANOSCALE 2021; 13:16672-16679. [PMID: 34590640 DOI: 10.1039/d1nr04975e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Two-dimensional (2D) materials with robust ferromagnetic behavior have attracted great interest because of their potential applications in next-generation nanoelectronic devices. Aside from graphene and transition metal dichalcogenides, Bi-based layered oxide materials are a group of prospective candidates due to their superior room-temperature multiferroic response. Here, an ultrathin Bi3Fe2Mn2O10+δ layered supercell (BFMO322 LS) structure was deposited on an LaAlO3 (LAO) (001) substrate using pulsed laser deposition. Microstructural analysis suggests that a layered supercell (LS) structure consisting of two-layer-thick Bi-O slabs and two-layer-thick Mn/Fe-O octahedra slabs was formed on top of the pseudo-perovskite interlayer (IL). A robust saturation magnetization value of 129 and 96 emu cm-3 is achieved in a 12.3 nm thick film in the in-plane (IP) and out-of-plane (OP) directions, respectively. The ferromagnetism, dielectric permittivity, and optical bandgap of the ultrathin BFMO films can be effectively tuned by thickness and morphology variation. In addition, the anisotropy of all ultrathin BFMO films switches from OP dominating to IP dominating as the thickness increases. This study demonstrates the ultrathin BFMO film with tunable multifunctionalities as a promising candidate for novel integrated spintronic devices.
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Affiliation(s)
- Zihao He
- School of Electrical and Computer Engineering, Purdue University, West Lafayette, IN 47907-2045, USA.
| | - Xingyao Gao
- School of Materials Engineering, Purdue University, West Lafayette, IN 47907-2045, USA
| | - Di Zhang
- School of Materials Engineering, Purdue University, West Lafayette, IN 47907-2045, USA
| | - Ping Lu
- Sandia National Laboratories, Albuquerque, NM, 87185, USA
| | - Xuejing Wang
- School of Materials Engineering, Purdue University, West Lafayette, IN 47907-2045, USA
| | - Matias Kalaswad
- School of Electrical and Computer Engineering, Purdue University, West Lafayette, IN 47907-2045, USA.
| | - Bethany X Rutherford
- School of Materials Engineering, Purdue University, West Lafayette, IN 47907-2045, USA
| | - Haiyan Wang
- School of Electrical and Computer Engineering, Purdue University, West Lafayette, IN 47907-2045, USA.
- School of Materials Engineering, Purdue University, West Lafayette, IN 47907-2045, USA
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33
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Feng Q, Li X, Li X, Yang J. CrSbS 3 monolayer: a potential phase transition ferromagnetic semiconductor. NANOSCALE 2021; 13:14067-14072. [PMID: 34477687 DOI: 10.1039/d1nr03640h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Two dimensional intrinsic ferromagnetic semiconductors with controllable magnetic phase transition are highly desirable for spintronics. Nevertheless, reports on their successful experimental realization are still rare. Herein, based on first principles calculations, we propose to achieve such a functional material, namely CrSbS3 monolayer by exfoliating from its bulk crystal. Intrinsic CrSbS3 monolayer is a ferromagnetic half semiconductor with a moderate bandgap of 1.90 eV. It features an intriguing magnetic phase transition from ferromagnetic to antiferromagnetic when applying a small compressive strain (∼2%), making it ideal for fabricating strain-controlled magnetic switches or memories. In addition, the predicted strong anisotropic absorption of visible light and small effective masses make the CrSbS3 monolayer promising for optoelectronic applications.
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Affiliation(s)
- Qingqing Feng
- Department of Chemical Physics, Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei, Anhui 230026, China
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34
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Do TN, Hieu NN, Poklonski NA, Thanh Binh NT, Nguyen CQ, Hien ND. Computational insights into structural, electronic, and optical properties of Janus GeSO monolayer. RSC Adv 2021; 11:28381-28387. [PMID: 35480779 PMCID: PMC9038035 DOI: 10.1039/d1ra05424d] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 08/17/2021] [Indexed: 11/21/2022] Open
Abstract
Although O is an element of chalcogen group, the study of two-dimensional (2D) O-based Janus dichalcogenides/monochalcogenides, especially their 1T-phase, has not been given sufficient attention. In this work, we systematically investigate the structural, electronic, and optical properties of 1T Janus GeSO monolayer by using the density functional theory. Via the analysis of phonon spectrum and evaluation of elastic constants, the GeSO monolayer is confirmed to be dynamically and mechanically stable. Calculated results for the elastic constants demonstrate that the Janus GeSO monolayer is much mechanically flexible than other 2D materials due to its small Young's modulus. At the ground state, while both GeS2 and GeO2 monolayers are indirect semiconductors, the Janus GeSO monolayer is found to be a direct band gap semiconductor. Further, effective masses of both electrons and holes are predicted to be directionally isotropic. The Janus GeSO monolayer has a broad absorption spectrum, which is activated from the visible light region and its absorption intensity is very high in the near-ultraviolet region. The calculated results not only systematically provide the fundamental physical properties of GeSO monolayer, but also stimulate scientists to further studying its importance both theoretically and experimentally.
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Affiliation(s)
- Thi-Nga Do
- Laboratory of Magnetism and Magnetic Materials, Advanced Institute of Materials Science, Ton Duc Thang University Ho Chi Minh City Vietnam .,Faculty of Applied Sciences, Ton Duc Thang University Ho Chi Minh City Vietnam
| | - Nguyen N Hieu
- Institute of Research and Development, Duy Tan University Da Nang 550000 Vietnam .,Faculty of Environmental and Natural Sciences, Duy Tan University Da Nang 550000 Vietnam
| | - N A Poklonski
- Faculty of Physics, Belarusian State University Minsk 220030 Belarus
| | | | - Cuong Q Nguyen
- Institute of Research and Development, Duy Tan University Da Nang 550000 Vietnam .,Faculty of Environmental and Natural Sciences, Duy Tan University Da Nang 550000 Vietnam
| | - Nguyen D Hien
- Institute of Applied Technology, Thu Dau Mot University Binh Duong Province 75000 Vietnam
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35
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Linear and nonlinear thermal spin transport properties of zigzag α-graphyne nanoribbons with sp–sp edges. Chem Phys Lett 2021. [DOI: 10.1016/j.cplett.2021.138724] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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36
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Abstract
The traditional approach for materials discovery has been the domain of experimentalists, where elemental composition and synthesis conditions are often based on a trial-and-error method. Such processes are time-consuming and expensive. To minimize cost and to develop new materials at a faster pace, an alternate approach is to use theory to predict new materials with tailored properties and have experiments validate such predictions. The phenomenal increase in computing power, development of new first-principles methodologies, and a myriad of advanced computer codes in recent years have enabled researchers to predict novel materials that can be verified by later experiments. In this Perspective, we present advances in density functional theory-based methods and computational procedures that have made possible the discoveries of materials with varying size, composition, and dimensionalities. The challenges and opportunities in theory-guided discovery of materials, going forward, are also discussed.
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Affiliation(s)
- Puru Jena
- Physics Department, Virginia Commonwealth University, Richmond, Virginia 23284-2000, United States
| | - Qiang Sun
- School of Materials Science and Engineering, Peking University, Beijing 100871, China
- Center for Applied Physics and Technology, Peking University, Beijing 100871, China
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37
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Miao N, Sun Z. Computational design of two‐dimensional magnetic materials. WIRES COMPUTATIONAL MOLECULAR SCIENCE 2021. [DOI: 10.1002/wcms.1545] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Naihua Miao
- School of Materials Science and Engineering Beihang University Beijing China
- Center for Integrated Computational Materials Engineering International Research Institute for Multidisciplinary Science, Beihang University Beijing China
| | - Zhimei Sun
- School of Materials Science and Engineering Beihang University Beijing China
- Center for Integrated Computational Materials Engineering International Research Institute for Multidisciplinary Science, Beihang University Beijing China
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38
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Wu D, Zhuo Z, Lv H, Wu X. Two-Dimensional Cr 2X 3S 3 (X = Br, I) Janus Semiconductor with Intrinsic Room-Temperature Magnetism. J Phys Chem Lett 2021; 12:2905-2911. [PMID: 33725451 DOI: 10.1021/acs.jpclett.1c00454] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The exploration of two-dimensional (2D) semiconductors with intrinsic room-temperature magnetism for use in nanoscale spintronic devices is of particular interest. Recently, the ferromagnetic CrX3 monolayer (X = Br, I) has received growing attention, but low critical temperature hinders its practical applications in spintronics. Here, using first-principles calculations, we report 2D Cr2X3S3 (X = Br, I) Janus semiconductors with room-temperature magnetism by replacing one layer of halogon atoms with sulfur atoms in CrX3 monolayer. Our results demonstrate that Cr2Br3S3 and Cr2I3S3 Janus crystals are ferrimagnetic semiconductors, that maintain their magnetic order, with a direct bandgap of 1.19 and 0.61 eV and high critical temperature of 387 and 447 K, respectively. The residual unpaired p electrons on the S anions lead to a strong direct-exchange interaction between the Cr and S atoms. Moreover, their room-temperature magnetism is robust under biaxial strain, while the bandgap can be remarkably modulated with strain. The novel magnetic properties in 2D Cr2X3S3 Janus magnetic semiconductors give them promising applications in spintronics.
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Affiliation(s)
- Daoxiong Wu
- Hefei National Laboratory for Physical Sciences at the Microscale, School of Chemistry and Materials Sciences, CAS Key Laboratory of Materials for Energy Conversion, and CAS Center for Excellence in Nanoscience, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Zhiwen Zhuo
- Hefei National Laboratory for Physical Sciences at the Microscale, School of Chemistry and Materials Sciences, CAS Key Laboratory of Materials for Energy Conversion, and CAS Center for Excellence in Nanoscience, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Haifeng Lv
- Hefei National Laboratory for Physical Sciences at the Microscale, School of Chemistry and Materials Sciences, CAS Key Laboratory of Materials for Energy Conversion, and CAS Center for Excellence in Nanoscience, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Xiaojun Wu
- Hefei National Laboratory for Physical Sciences at the Microscale, School of Chemistry and Materials Sciences, CAS Key Laboratory of Materials for Energy Conversion, and CAS Center for Excellence in Nanoscience, University of Science and Technology of China, Hefei, Anhui 230026, China
- Synergetic Innovation of Quantum Information & Quantum Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
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39
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Zhou Y, Liu F. Realization of an Antiferromagnetic Superatomic Graphene: Dirac Mott Insulator and Circular Dichroism Hall Effect. NANO LETTERS 2021; 21:230-235. [PMID: 33263394 DOI: 10.1021/acs.nanolett.0c03579] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Using first-principles calculations, we investigate the electronic and topological properties of an antiferromagnetic (AFM) superatomic graphene lattice superimposed on a bipartite honeycomb lattice governed by Lieb's theorem of itinerant magnetism. It affords a concrete material realization of the AFM honeycomb model with a Dirac Mott insulating state, characterized by a gap opening at the Dirac point due to inversion symmetry breaking by long-range AFM order. The opposite Berry curvatures of the K and K' valleys induces a circular dichroism (CD) Hall effect. Different from the valley Hall effect that activates only one valley, the CD Hall effect activates carriers from both K and K' valleys, generating the opposite directions of transversal Hall currents for the left- and right-handed circularly polarized light, respectively.
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Affiliation(s)
- Yinong Zhou
- Department of Materials Science and Engineering, University of Utah, Salt Lake City, Utah 84112, United States
| | - Feng Liu
- Department of Materials Science and Engineering, University of Utah, Salt Lake City, Utah 84112, United States
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40
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Ge L, Liu H, Wang J, Huang H, Cui Z, Huang Q, Fu Z, Lu Y. Properties of diamane anchored with different groups. Phys Chem Chem Phys 2021; 23:14195-14204. [PMID: 34159999 DOI: 10.1039/d1cp01747k] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The two-dimensional counterpart of diamond, diamane, has attracted increasing interest due to its potentially distinctive properties. In this paper, diamanes anchored with different anion groups have been systematically studied with density functional theory (DFT) for the first time. Among them 12 conformers are confirmed to be stable and present direct semiconductor features with bandgaps ranging from 2.527 eV to 4.153 eV, and the in-plane stiffness is larger than that of graphene. Moreover, the electron carrier mobility of chair2-F is exceptionally high at 16546.713 cm2 V-1 s-1 along the y-direction, which is remarkably larger than that of diamond; and N-, B-doped boat2-H can be doped to have n-, p-type conductivity with a moderate activation energy of 0.34 and 0.37 eV, respectively. This work suggests that functionalized diamanes are promising for electronic devices and engineering materials.
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Affiliation(s)
- Liangbing Ge
- CAS Key Laboratory of Materials for Energy Conversion & Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China.
| | - Huan Liu
- CAS Key Laboratory of Materials for Energy Conversion & Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China.
| | - Jianling Wang
- Hefei National Research Center for Physical Sciences at the Microscale, Hefei, Anhui 230026, P. R. China and Anhui Laboratory of Advanced Photon Science and Technology, Hefei 230026, P. R. China
| | - Haoliang Huang
- Hefei National Research Center for Physical Sciences at the Microscale, Hefei, Anhui 230026, P. R. China and Anhui Laboratory of Advanced Photon Science and Technology, Hefei 230026, P. R. China
| | - ZhangZhang Cui
- Hefei National Research Center for Physical Sciences at the Microscale, Hefei, Anhui 230026, P. R. China and Anhui Laboratory of Advanced Photon Science and Technology, Hefei 230026, P. R. China
| | - Qiuping Huang
- Hefei National Research Center for Physical Sciences at the Microscale, Hefei, Anhui 230026, P. R. China and Anhui Laboratory of Advanced Photon Science and Technology, Hefei 230026, P. R. China
| | - Zhengping Fu
- CAS Key Laboratory of Materials for Energy Conversion & Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China. and Hefei National Research Center for Physical Sciences at the Microscale, Hefei, Anhui 230026, P. R. China and Anhui Laboratory of Advanced Photon Science and Technology, Hefei 230026, P. R. China
| | - Yalin Lu
- CAS Key Laboratory of Materials for Energy Conversion & Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China. and Hefei National Research Center for Physical Sciences at the Microscale, Hefei, Anhui 230026, P. R. China and Anhui Laboratory of Advanced Photon Science and Technology, Hefei 230026, P. R. China
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41
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Kumar V, Dey A, Thomas S, Asle Zaeem M, Roy DR. Hydrogen-induced tunable electronic and optical properties of a two-dimensional penta-Pt 2N 4 monolayer. Phys Chem Chem Phys 2021; 23:10409-10417. [PMID: 33889892 DOI: 10.1039/d1cp00681a] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Most known two-dimensional materials lack a suitable wide-bandgap, and hydrogenation can be effectively utilized to tune the bandgap of some 2D materials. By employing density functional theory calculations, we investigate the effect of hydrogenation on the electronic and optical properties of a recently reported anisotropic penta-Pt2N4 monolayer. The results show that penta-Pt2N4 is thermally and mechanically stable after hydrogenation and also possesses anisotropic Young's modulus and Poisson's ratio. The electronic property analysis using the hybrid functional reveals that penta-Pt2N4 exhibits a bandgap of 1.10 eV, and the hydrogenation significantly enhances the bandgap to 2.70 eV. Furthermore, the hydrogenated Pt2N4 displays a strong optical absorption of up to 6.45 × 105 cm-1 in the ultraviolet region, and low absorption and low reflectivity in the visible region. Our results strongly suggest that the hydrogenated Pt2N4 has tunable electronic and optical properties for applications as a hole-transport material layer in solar cells in the visible region, and as an ultraviolet detector in the ultraviolet region of the electromagnetic spectrum.
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Affiliation(s)
- Vipin Kumar
- Materials and Biophysics Group, Department of Physics, Sardar Vallabhbhai National Institute of Technology, Surat 395007, India.
| | - Aditya Dey
- Department of Physics, Indian Institute of Technology, Patna, Bihar-801106, India
| | - Siby Thomas
- Department of Mechanical Engineering, Colorado School of Mines, 1500 Illinois St., Golden, CO-80401, USA.
| | - Mohsen Asle Zaeem
- Department of Mechanical Engineering, Colorado School of Mines, 1500 Illinois St., Golden, CO-80401, USA.
| | - Debesh R Roy
- Materials and Biophysics Group, Department of Physics, Sardar Vallabhbhai National Institute of Technology, Surat 395007, India.
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42
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Yeh CH. Computational Study of Janus Transition Metal Dichalcogenide Monolayers for Acetone Gas Sensing. ACS OMEGA 2020; 5:31398-31406. [PMID: 33324851 PMCID: PMC7726957 DOI: 10.1021/acsomega.0c04938] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Accepted: 11/16/2020] [Indexed: 05/25/2023]
Abstract
Recently, Janus two-dimensional (2D) transition metal dichalcogenides (TMDs) have been widely investigated and have provided exciting prospects in many fields such as photoelectric materials, photocatalysis, and gas sensors. In this study, we performed density functional theory (DFT) calculations to study the sensitivity of four volatile organic compounds (VOCs), including acetone, methanol, ethanol, and formyl aldehyde, over pristine 2D TMDs and 2D Janus TMD monolayers. We found that MoS2, Janus MoSSe, and Janus MoSTe demonstrated greater sensitivity toward acetone than other VOCs. Furthermore, the band gap values of the Janus MoSSe and Janus MoSTe monolayers dramatically changed after acetone adsorption on their sulfur layers, which was quite larger than the band gap change after acetone adsorption on the MoS2 monolayer. This result also leads to the extremely large conductivity change of Janus MoSSe and Janus MoSTe after sensing acetone. Hence, Janus MoSSe and Janus MoSTe monolayers show much higher sensitivity toward acetone in comparison with the pristine MoS2 monolayer. Finally, our finding indicates that Janus MoSSe and Janus MoSTe monolayers can be proposed as ultrahigh-sensitivity 2D TMD materials for acetone sensors.
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Affiliation(s)
- Chen-Hao Yeh
- Department of Materials Science and Engineering, Feng Chia University, No. 100, Wenhwa Road, Seatwen, Taichung 40724, Taiwan
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43
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Qi S, Jiang J, Mi W. Tunable valley polarization, magnetic anisotropy and Dzyaloshinskii-Moriya interaction in two-dimensional intrinsic ferromagnetic Janus 2H-VSeX (X = S, Te) monolayers. Phys Chem Chem Phys 2020; 22:23597-23608. [PMID: 33057488 DOI: 10.1039/d0cp03292a] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Two-dimensional (2D) Janus materials are a novel kind of 2D materials, which have potential applications in nanoelectronics, optoelectronics and spintronics. However, a 2D Janus material combined with intrinsic ferromagnetism, electric dipole moment, valley polarization and Dzyaloshinskii-Moriya interaction (DMI) remains rarely reported. Here, the electronic structure and magnetic properties of 2D intrinsic ferromagnetic Janus 2H-VSeX (X = S, Te) monolayers are investigated systematically using the density-functional theory. Janus 2H-VSeX (X = S, Te) monolayers are intrinsic ferromagnetic semiconductors with in-plane magnetic anisotropy (IMA). The valley splitting of Janus 2H-VSeX (X = S, Te) monolayers appears by considering the spin-orbit coupling (SOC) effect and out of plane magnetization. Additionally, spontaneous vertical electric dipole moment and a large DMI are also found in Janus 2H-VSeX (X = S, Te) monolayers due to the broken inversion symmetry. Moreover, the valley splitting and DMI can be significantly increased by applying in-plane biaxial strain. These results provide an interesting 2D intrinsic ferromagnetic Janus material, which has potential applications in spintronic and valleytronic devices.
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Affiliation(s)
- Shengmei Qi
- Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparation Technology, School of Science, Tianjin University, Tianjin 300354, China.
| | - Jiawei Jiang
- Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparation Technology, School of Science, Tianjin University, Tianjin 300354, China.
| | - Wenbo Mi
- Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparation Technology, School of Science, Tianjin University, Tianjin 300354, China.
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44
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Pentsak EO, Gordeev EG, Ananikov VP. Carbocatalysis: From Acetylene Trimerization to Modern Organic Synthesis. A Review. DOKLADY PHYSICAL CHEMISTRY 2020. [DOI: 10.1134/s0012501620380017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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45
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Bafekry A, Nguyen CV, Goudarzi A, Ghergherehchi M, Shafieirad M. Investigation of strain and doping on the electronic properties of single layers of C 6N 6 and C 6N 8: a first principles study. RSC Adv 2020; 10:27743-27751. [PMID: 35516966 PMCID: PMC9055606 DOI: 10.1039/d0ra04463f] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 07/09/2020] [Indexed: 12/02/2022] Open
Abstract
In this work, by performing first-principles calculations, we explore the effects of various atom impurities on the electronic and magnetic properties of single layers of C6N6 and C6N8. Our results indicate that atom doping may significantly modify the electronic properties. Surprisingly, doping Cr into a holey site of C6N6 monolayer was found to exhibit a narrow band gap of 125 meV upon compression strain, considering the spin-orbit coupling effect. Also, a C atom doped in C6N8 monolayer shows semi-metal nature under compression strains larger than -2%. Our results propose that Mg or Ca doped into strained C6N6 may exhibit small band gaps in the range of 10-30 meV. In addition, a magnetic-to-nonmagnetic phase transition can occur under large tensile strains in the Ca doped C6N8 monolayer. Our results highlight the electronic properties and magnetism of C6N6 and C6N8 monolayers. Our results show that the electronic properties can be effectively modified by atom doping and mechanical strain, thereby offering new possibilities to tailor the electronic and magnetic properties of C6N6 and C6N8 carbon nitride monolayers.
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Affiliation(s)
- Asadollah Bafekry
- Department of Physics, University of Guilan 41335-1914 Rasht Iran
- Department of Physics, University of Antwerp Groenenborgerlaan 171 B-2020 Antwerp Belgium
| | - Chuong V Nguyen
- Institute of Research and Development, Duy Tan University Da Nang 550000 Vietnam
| | - Abbas Goudarzi
- Department of Physics, University of North Texas Denton Texas USA
| | - Mitra Ghergherehchi
- College of Electronic and Electrical Engineering, Sungkyunkwan University Suwon Korea
| | - Mohsen Shafieirad
- Department of Electrical and Computer Engineering, University of Kashan Kashan Iran
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46
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Tian XQ, Duan JY, Kiani M, Wei YD, Feng N, Gong ZR, Wang XR, Du Y, Yakobson BI. Hexagonal layered group IV-VI semiconductors and derivatives: fresh blood of the 2D family. NANOSCALE 2020; 12:13450-13459. [PMID: 32614000 DOI: 10.1039/d0nr02217a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
New phases of group IV-VI semiconductors in 2D hexagonal structures are predicted and their unusual physical properties are revealed. The structures of monolayer group IV-VI semiconductors are similar to those of blue phosphorene and each unit has the same ten valence electrons. The band gap of 2D hexagonal group IV-VI semiconductors depends on both the thickness and stacking order. Atomic functionalization can induce ferromagnetism, and the Curie temperature can be tuned. Gapped Dirac fermions with zero mass are developed and this makes it exceed that of graphene. The Fermi velocity can be compared to or even above that of graphene.
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Affiliation(s)
- Xiao-Qing Tian
- College of Physics and Optical Engineering, Shenzhen University, Shenzhen 518060, Guangdong, P. R. China.
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47
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Zhang J, Xu C, Guo Z, Han L. Tunable electronic properties of biased bilayer stanane via electric field. Chem Phys Lett 2020. [DOI: 10.1016/j.cplett.2020.137436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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48
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Mahmood A, Rahman G. Structural and electronic properties of two-dimensional hydrogenated Xenes. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2020; 32:205501. [PMID: 31945759 DOI: 10.1088/1361-648x/ab6cbd] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Structural and electronic properties of pristine two-dimensional group IV Xenes (X = C, Si, Ge, Sn, Pb) and hydrogenated Xenes are studied, using density functional theory (DFT) calculations with and without spin-orbit coupling (SOC). The pristine hexagonal monolayer Xenes show buckled structure upon relaxation except graphene. The buckling [Formula: see text] increases linearly from graphene to plumbene. The band structures without SOC of group-IV Xenes are semi-metallic. However, inclusion of SOC mainly opens the bandgap at the Dirac point. Semi hydrogenation leads to enhanced buckling in all Xenes which indicate a tendency towards more sp 3 like structures. The electronic structures of semi hydrogenated Xenes do not show Dirac cones. Spin polarized band structures show magnetism with magnetic moment of 1.0 [Formula: see text] and all SH Xenes are magnetic semiconductor except SH plumbene. Full hydrogenation vanishes buckling upon relaxation and the structure becomes planar implying sp 2-like hybridization. The band structures for fully hydrogenated Xenes turns out to be semiconducting and the Dirac cones also disappear. The bandgap changes from indirect to direct at FH stanene, while FH plumbene turns out to be semi-metallic. SOC gives rise to bandgap of 0.47 eV in FH plumbene, which is otherwise a semi-metal.
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Affiliation(s)
- Asad Mahmood
- Department of Physics, Quaid-i-Azam University, Islamabad 45320, Pakistan
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49
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Zhang G, Samuely T, Iwahara N, Kačmarčík J, Wang C, May PW, Jochum JK, Onufriienko O, Szabó P, Zhou S, Samuely P, Moshchalkov VV, Chibotaru LF, Rubahn HG. Yu-Shiba-Rusinov bands in ferromagnetic superconducting diamond. SCIENCE ADVANCES 2020; 6:eaaz2536. [PMID: 32440544 PMCID: PMC7228758 DOI: 10.1126/sciadv.aaz2536] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/24/2019] [Accepted: 03/03/2020] [Indexed: 06/11/2023]
Abstract
The combination of different exotic properties in materials paves the way for the emergence of their new potential applications. An example is the recently found coexistence of the mutually antagonistic ferromagnetism and superconductivity in hydrogenated boron-doped diamond, which promises to be an attractive system with which to explore unconventional physics. Here, we show the emergence of Yu-Shiba-Rusinov (YSR) bands with a spatial extent of tens of nanometers in ferromagnetic superconducting diamond using scanning tunneling spectroscopy. We demonstrate theoretically how a two-dimensional (2D) spin lattice at the surface of a three-dimensional (3D) superconductor gives rise to the YSR bands and how their density-of-states profile correlates with the spin lattice structure. The established strategy to realize new forms of the coexistence of ferromagnetism and superconductivity opens a way to engineer the unusual electronic states and also to design better-performing superconducting devices.
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Affiliation(s)
- Gufei Zhang
- NanoSYD, Mads Clausen Institute and DIAS Danish Institute for Advanced Study, University of Southern Denmark, Alsion 2, DK-6400 Sonderborg, Denmark
| | - Tomas Samuely
- Centre of Low Temperature Physics, Institute of Experimental Physics, Slovak Academy of Sciences & Faculty of Science, P. J. Safarik University, Kosice, Slovakia
| | - Naoya Iwahara
- Theory of Nanomaterials Group, KU Leuven, Celestijnenlaan 200F, B-3001 Heverlee, Belgium
- Department of Chemistry, National University of Singapore, Block S8 Level 3, 3 Science Drive 3, Singapore 117543, Singapore
| | - Jozef Kačmarčík
- Centre of Low Temperature Physics, Institute of Experimental Physics, Slovak Academy of Sciences & Faculty of Science, P. J. Safarik University, Kosice, Slovakia
| | - Changan Wang
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Ion Beam Physics and Materials Research, Bautzner Landstr. 400, 01328 Dresden, Germany
| | - Paul W. May
- School of Chemistry, University of Bristol, Bristol BS8 1TS, UK
| | - Johanna K. Jochum
- Laboratory of Solid State Physics and Magnetism, KU Leuven, B-3001 Heverlee, Belgium
- Heinz Maier-Leibnitz Zentrum (MLZ), Technische Universität München, Lichtenbergstrasse 1, 85748 Garching, Germany
| | - Oleksandr Onufriienko
- Centre of Low Temperature Physics, Institute of Experimental Physics, Slovak Academy of Sciences & Faculty of Science, P. J. Safarik University, Kosice, Slovakia
| | - Pavol Szabó
- Centre of Low Temperature Physics, Institute of Experimental Physics, Slovak Academy of Sciences & Faculty of Science, P. J. Safarik University, Kosice, Slovakia
| | - Shengqiang Zhou
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Ion Beam Physics and Materials Research, Bautzner Landstr. 400, 01328 Dresden, Germany
| | - Peter Samuely
- Centre of Low Temperature Physics, Institute of Experimental Physics, Slovak Academy of Sciences & Faculty of Science, P. J. Safarik University, Kosice, Slovakia
| | | | - Liviu F. Chibotaru
- Theory of Nanomaterials Group, KU Leuven, Celestijnenlaan 200F, B-3001 Heverlee, Belgium
| | - Horst-Günter Rubahn
- NanoSYD, Mads Clausen Institute and DIAS Danish Institute for Advanced Study, University of Southern Denmark, Alsion 2, DK-6400 Sonderborg, Denmark
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50
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Bandyopadhyay A, Jana D. A review on role of tetra-rings in graphene systems and their possible applications. REPORTS ON PROGRESS IN PHYSICS. PHYSICAL SOCIETY (GREAT BRITAIN) 2020; 83:056501. [PMID: 32235067 DOI: 10.1088/1361-6633/ab85ba] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Inspired by the success of graphene, various two-dimensional (2D) non-hexagonal graphene allotropes having sp2-bonded tetragonal rings in free-standing (hypothetical) form and on different substrates have been proposed recently. These systems have also been fabricated after modifying the topology of graphene by chemical processes. In this review, we would like to indicate the role of tetra-rings and the local symmetry breaking on the structural, electronic and optical properties of the graphene system. First-principles computations have demonstrated that the tetragonal graphene (TG) allotrope exhibits appreciable thermodynamic stability. The band structure of the TG nanoribbons (TGNRs) strongly depends on the size and edge geometry. This fact has been supported by the transport properties of TGNRs. The optical properties and Raman modes of this graphene allotrope have been well explored for characterisation purposes. Recently, a tight-binding model was used to unravel the metal-to-semiconductor transition under the influence of external magnetic fluxes. Even the introduction of transition metal atoms into this non-hexagonal network can control the magnetic response of the TG sheet. Furthermore, the collective effect of B-N doping and confinement effect on the structural and electronic properties of TG systems has been investigated. We also suggest future directions to be explored to make the synthesis of T graphene and its various derivatives/allotropes viable for the verification of theoretical predictions. It is observed that these doped systems act as a potential candidate for carbon monoxide gas sensing and current rectification devices. Therefore, all these experimental, numerical and analytical studies related to non-hexagonal TG systems are extremely important from a basic science point of view as well as for applications in sensing, optoelectronic and photonic devices.
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Affiliation(s)
- Arka Bandyopadhyay
- Department of Physics, University of Calcutta, 92 A P C Road, Kolkata 700009, India
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