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Tahir M, Imran M, H Shah Z, Bilal Riaz M, Riaz S, Naseem S. Phase formation and dielectric properties of MgFe 2O 4 nanoparticles synthesized by hydrothermal technique. Heliyon 2024; 10:e29553. [PMID: 38660268 PMCID: PMC11040050 DOI: 10.1016/j.heliyon.2024.e29553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2023] [Revised: 04/09/2024] [Accepted: 04/10/2024] [Indexed: 04/26/2024] Open
Abstract
In the recent development of energy storage devices, the scientific study has demonstrated a significant interest in the applications of the magnesium iron oxide (MgFe2O4) nanoparticles. In this work, we present synthesized novel MgFe2O4 nanoparticles at different molarities (0.1-0.5 M), via hydrothermal technique. An X-ray Diffractometer was used to study the phase analysis of the prepared samples at different molarities. A pure cubic phase of the MgFe2O4 is observed at molar concentrations of 0.3 M and 0.4 M. However, the mixed phases consisting of (MgFe2O4 + γ-Fe2O3) were also observed at 0.1 M, 0.2 M, and 0.5 M. The pure cubic MgFe2O4 nanoparticles depict the large value of crystallite size, 19.5 nm, and the lowest dislocation density and strain. The vibrating Sample Magnetometer shows the ferromagnetic nature of the pure MgFe2O4 with a high saturation magnetization. The value of saturation magnetization surged from 36.88 emu/g to 55.2 emu/g at 0.4 M concentration. The dielectric response of the materials as a function of applied frequency was studied thoroughly by using an Impedance Analyzer. The highest value of dielectric constant and low tangent loss was also reported at 0.4 M. Cole-Cole plots are the affirmation of the contribution of both grains and grain boundaries in the charge mechanism. These distinctive features make the synthesized material an excellent choice for future spintronics and energy storage devices.
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Affiliation(s)
- Muhammad Tahir
- Department of Physics, University of Management and Technology, Lahore, Pakistan
| | - Muhammad Imran
- Department of Physics, Division of Science and Technology, University of Education, Lahore Pakistan
| | - Zaheer H Shah
- Department of Physics, University of Management and Technology, Lahore, Pakistan
| | - Muhammad Bilal Riaz
- IT4Innovations, VSB – Technical University of Ostrava, Ostrava, Czech Republic
- Department of Computer Science and Mathematics, Lebanese American University, Byblos, Lebanon
| | - Saira Riaz
- Centre of Excellence in Solid State Physics, University of the Punjab, Lahore-54590, Pakistan
| | - Shahzad Naseem
- Centre of Excellence in Solid State Physics, University of the Punjab, Lahore-54590, Pakistan
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Rawat P, Sethi A, Kim JH, Rhyee JS. Single crystal synthesis and physical property of Ba 8Cu 1·0Ni 2.5Ga 10Si 33.5 clathrate. Heliyon 2024; 10:e27134. [PMID: 38444504 PMCID: PMC10912696 DOI: 10.1016/j.heliyon.2024.e27134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Revised: 02/16/2024] [Accepted: 02/24/2024] [Indexed: 03/07/2024] Open
Abstract
This study reports the synthesis of type-I Ba8CuNi2.5Ga10Si33.5 clathrate as a single crystal by the flux method and physical properties investigations such as structural, chemical, magnetic, and thermal properties. Structural refinements indicate Ba atoms are situated at 2a and 6d positions with mixed occupancy across framework sites. Raman spectroscopy assessed host-guest interactions, while the compound's morphology and composition were investigated by the scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), and X-ray photoelectron spectroscopy (XPS) analyses. Magnetic properties revealed ferromagnetic interactions characterized by a positive Weiss constant and weak ferromagnetic hysteresis. The compound's metallic nature is evidenced by increased resistivity with temperature. The Sommerfeld coefficient, estimated at 12.59 mJ mol-1 K-2 from heat capacity data, alongside a pronounced peak around 15 K in the Cp/T3 vs T plot, suggests an Einstein contribution in heat capacity.
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Affiliation(s)
- Pooja Rawat
- Department of Applied Physics and Institute of Natural Sciences, Integrated Education Institute for Frontier Science and Technology (BK21 Four), Kyung Hee University, Yong-in 17104, Republic of Korea
- Department of Chemistry, Biochemistry and Forensic Science, Amity School of Applied Sciences, Amity University Haryana, Gurugram, Haryana 122413, India
| | - Aanchal Sethi
- Department of Chemistry, Swami Shraddhanand College, University of Delhi, Delhi-110036, India
| | - Jin Hee Kim
- Department of Applied Physics and Institute of Natural Sciences, Integrated Education Institute for Frontier Science and Technology (BK21 Four), Kyung Hee University, Yong-in 17104, Republic of Korea
| | - Jong Soo Rhyee
- Department of Applied Physics and Institute of Natural Sciences, Integrated Education Institute for Frontier Science and Technology (BK21 Four), Kyung Hee University, Yong-in 17104, Republic of Korea
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Li YQ, Zhang X, Shang X, He QW, Tang DS, Wang XC, Duan CG. Magnetic and Ferroelectric Manipulation of Valley Physics in Janus Piezoelectric Materials. Nano Lett 2023; 23:10013-10020. [PMID: 37856232 DOI: 10.1021/acs.nanolett.3c03238] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2023]
Abstract
The realization of multiferroic materials offers the possibility of multifunctional electronic device design. However, the coupling between the multiferroicity and piezoelectricity in Janus materials is rarely reported. In this study, we propose a mechanism for manipulating valley physics by magnetization reversing and ferroelectric switching in multiferroic and piezoelectric material. The ferromagnetic VSiGeP4 monolayer exhibits a large valley polarization up to 100 meV, which can be effectively operated by reversing magnetization. Interestingly, the antiferromagnetic VSiGeP4 bilayers with AB and BA stacking configurations allow the coexistence of valley polarization and ferroelectricity, supporting the proposed strategy for manipulating valley physics via ferroelectric switching and interlayer sliding. In addition, the VSiGeP4 monolayer contains remarkable tunable piezoelectricity regulated by electron correlation U. This study proposes a feasible idea for regulating valley polarization and a general design idea for multifunctional devices with multiferroic and piezoelectric properties, facilitating the miniaturization and integration of nanodevices.
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Affiliation(s)
- Yun-Qin Li
- Key Laboratory of Polar Materials and Devices (MOE), School of Physics and Electronic Science and Shanghai Center of Brain-inspired Intelligent Materials and Devices, East China Normal University, Shanghai 200241, China
| | - Xian Zhang
- Henan Key Laboratory of Photoelectric Energy Storage Materials and Applications, School of Physics and Engineering, Henan University of Science and Technology, Luoyang 471023, China
| | - Xiao Shang
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
| | - Qi-Wen He
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
| | - Dai-Song Tang
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
| | - Xiao-Chun Wang
- School of Physics Science and Information Technology, Liaocheng University, Liaocheng 252000, China
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
| | - Chun-Gang Duan
- Key Laboratory of Polar Materials and Devices (MOE), School of Physics and Electronic Science and Shanghai Center of Brain-inspired Intelligent Materials and Devices, East China Normal University, Shanghai 200241, China
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Rana S, Karimunnesa S, Alam F, Chandra Das B, Khan FA. Strain induced structural phase transition and compositional dependent magnetic phase transition in Ti doped Bi(0.80)Ba(0.20)FeO(3) ceramics. Heliyon 2022; 8:e12530. [PMID: 36590567 DOI: 10.1016/j.heliyon.2022.e12530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 11/21/2022] [Accepted: 12/14/2022] [Indexed: 12/24/2022] Open
Abstract
Bi0.80Ba0.20Fe1-xTixO3 ( 0 ≤ x ≤ 0.10 ) samples are prepared using solid state reaction technique. Bi3+ site is replaced with 20 % Ba2+ which induced structural modification from rhombohedral to pseudo cubic accompanied by the creation of oxygen vacancies owing to the charge reimbursement. Fe3+ site is replaced with different concentrations of Ti4+ keeping Ba content fixed. All the samples exhibited similar morphology and no significant variation in grain size is observed by substituting Ti at Fe site. All of the samples exhibited ferromagnetic behavior, which is ascribed to the destruction of spiral spin structures and changes in super-exchange interaction strength caused by variations in bond lengths of Fe-O and Fe-O-Fe. The decrease in magnetization with increasing Ti concentration is due to magnetic moment dilution caused by non-magnetic Ti4+. An anomalous trend in magnetization is observed for magnetic measurements at low temperature (77 K) where structural transformation from ferromagnetic to diamagnetic behavior was noted for 10% Ti content. Further, because of the incorporation of Ti4+, an improved dielectric property was observed due to increase in resistivity and decrease in the defect concentration (oxygen vacancies). In the present study, it was concluded that optimum concentration of Ba2+ (20%) and Ti4+ co-doped BiFeO3 systems have shown enhanced multiferroic properties at room temperature.
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Niu B, Wang L, Li M, Yao W, Zang K, Zhou L, Hu X, Zheng Y. Lattice B-doping evolved ferromagnetic perovskite-like catalyst for enhancing persulfate-based degradation of norfloxacin. J Hazard Mater 2022; 425:127949. [PMID: 34883372 DOI: 10.1016/j.jhazmat.2021.127949] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 11/26/2021] [Accepted: 11/26/2021] [Indexed: 06/13/2023]
Abstract
Series of B-doped perovskite-like materials CeCu0.5Co0.5O3 (B-C3O) were fabricated with unique ferromagnetic property due to partial substitution of non-magnetic 2p-impurities boron in the lattice. Then, B-C3O was used for activating peroxymonosulfate (PMS) for the degradation of norfloxacin (NOR), one kind of emerging pollutants with the concentration level up to mg/L in wastewaters. The results indicated that 5.0% B-C3O exhibited stable catalytic ability at pH 3.0-9.0 and high degradation efficiency in co-existing inorganic Cl-, SO42-, NO3-, H2PO4- and organic humic acid. Non-radical 1O2, radicals •OH and SO4•-, as well as ClO- were detected with synergy effect for NOR degradation. By quantifying free radicals, •OH with 0.52 µM and SO4•- with 10.91 µM were obtained at 180 min, verifying the leading role of SO4•-. The degradation process involved the defluorination and decarboxylation, as well as opening of quinolone and piperazinyl rings. Adopting alfalfa as the model plant, the toxicity effect before and after NOR degradation was finally evaluated with seed germination rate and chlorophyll content as the physiological indicators. In summary, non-metal B-doping not only provides a creative strategy for the development of ferromagnetic perovskite-like materials, but also affords excellent catalysts for aiding the advanced oxidation technology for removal of emerging pollutants in wastewaters.
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Affiliation(s)
- Bihui Niu
- Gansu Key Laboratory for Environmental Pollution Prediction and Control, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, China
| | - Luhan Wang
- Gansu Key Laboratory for Environmental Pollution Prediction and Control, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, China
| | - Mingzhe Li
- Gansu Key Laboratory for Environmental Pollution Prediction and Control, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, China
| | - Wenli Yao
- Gansu Key Laboratory for Environmental Pollution Prediction and Control, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, China
| | - Kun Zang
- College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Lei Zhou
- College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Xiaowen Hu
- College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730020, China
| | - Yian Zheng
- Gansu Key Laboratory for Environmental Pollution Prediction and Control, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, China.
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Aledealat K, Aladerah B, Obeidat A, Gharaibeh M. First-principles study of electronic structure and magnetic properties of L1 0-ordered FeNi, FePd, and FePt alloys. Heliyon 2021; 7:e08639. [PMID: 35024483 DOI: 10.1016/j.heliyon.2021.e08639] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 11/14/2021] [Accepted: 12/16/2021] [Indexed: 11/22/2022] Open
Abstract
The structural, electronic, and magnetic properties of three spin configurations of L10-ordered FeM alloys (M = Ni, Pd, or Pt) were studied using the first-principles method. The calculations were carried out using Quantum ESPRESSO package within the framework of Density Functional Theory (DFT). The exchange-correlation functional potentials were studied using local density approximation (LDA) of Perdew-Zunger (PZ), the generalized gradient approximation (GGA) of Perdew–Burke–Ernzerhof (PBE), Perdew and Wang 91 (PW91), and Perdew-Burke-Ernzerhof revised for solids (PBEsol). We found that the PBE approximation has the most accurate results for lattice parameters compared to the experimental values. Furthermore, our results reveal that the most stable spin configuration for the considered alloys is the ferromagnetic configuration, where all spins are aligned perpendicular to the (001) plane. However, in FePd and FePt alloys, a small variation in the tetragonality ratio c/a (from 0.98 to 0.92) can transform them from ferromagnetic to antiferromagnetic state. In an antiferromagnetic state, a pseudogap is observed just below fermi energy for each alloy. Moreover, our calculations reveal large magnetocrystalline anisotropies for FePt alloy in the order of 3 meV/f.u. On the other hand, FePd and FeNi show relatively lower values in the range of 0.18–0.42 meV/f.u. Finally, Heisenberg exchange interactions are calculated from first-principles and Green's functions formalism.
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Pu M, Wan J, Zhang F, Brusseau ML, Ye D, Niu J. Insight into degradation mechanism of sulfamethoxazole by metal-organic framework derived novel magnetic Fe@C composite activated persulfate. J Hazard Mater 2021; 414:125598. [PMID: 34030424 DOI: 10.1016/j.jhazmat.2021.125598] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 02/19/2021] [Accepted: 03/03/2021] [Indexed: 06/12/2023]
Abstract
Novel Fe@C composites derived from metal-organic framework (MOF) were synthesized. Being subject to pyrolysis under different temperatures endows these Fe@Cs diverse physical-chemical properties, including morphology, crystal structure, defect level, magnetism, and most importantly, iron phase composition. Fe@C-800 consists mainly of Fe3C and α-Fe, thus possesses strong ferromagnetic properties, which imparts the ability to be separated and recycled. Its catalytic activity towards the activation of persulfate (PS) and the decomposition of sulfamethoxazole (SMX) was found to be the best among all the Fe@Cs, and this activity can be regenerated by simple heat treatment. Given the mixed form of iron and N-doped carbon, α-Fe/Fe3C species provide electrons for PS to decompose and generate sulfate radical (SO4·-), hydroxyl radical (·OH), and superoxide radical (O2·-), initiating the radical pathway for partial SMX degradation. The positively charged C atoms on PS bonded Fe@C, as well as the conversion of O2·- give rise to the generation of singlet oxygen (1O2), which was responsible for the non-radical pathway for SMX degradation. As a consequence, SMX was degraded to intermediates through five degradation pathways, and finally mineralized to inorganic molecules. The results indicate that Fe@C-800 has great potential to serve as a promising activator for persulfate-mediated environmental remediation.
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Affiliation(s)
- Mengjie Pu
- Research Center for Eco-Environmental Engineering, Dongguan University of Technology, Dongguan 523808, China.
| | - Jinquan Wan
- College of Environment and Energy, South China University of Technology, Guangzhou 510006, China.
| | - Fengzhen Zhang
- Research Center for Eco-Environmental Engineering, Dongguan University of Technology, Dongguan 523808, China.
| | - Mark L Brusseau
- Department of Soil, Water and Environmental Science, School of Earth and Environmental Sciences, University of Arizona, Tucson, Arizona, 85721, USA.
| | - Daqi Ye
- Research Center for Eco-Environmental Engineering, Dongguan University of Technology, Dongguan 523808, China.
| | - Junfeng Niu
- Research Center for Eco-Environmental Engineering, Dongguan University of Technology, Dongguan 523808, China.
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Appu M, Lian Z, Zhao D, Huang J. Biosynthesis of chitosan-coated iron oxide (Fe 3O 4) hybrid nanocomposites from leaf extracts of Brassica oleracea L. and study on their antibacterial potentials. 3 Biotech 2021; 11:271. [PMID: 34017676 DOI: 10.1007/s13205-021-02820-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Accepted: 05/03/2021] [Indexed: 10/21/2022] Open
Abstract
In this study, we prepared chitosan (CS)-coated iron oxide (Fe3O4) nanocomposites (NCs) by employing the aqueous leaf extract of Brassica oleracea L. and evaluated its antimicrobial potential. The characterization of hybrid CS-Fe3O4 NCs was performed using Fourier-transform infrared spectroscopy (FTIR) analysis to evaluate the chemical bonding of chitosan to nanoparticles (NPs). X-ray photoelectron spectroscopy (XPS) studies revealed the presence of oxidation state elements Fe 2p, O 1s, N 1s, and C 1s, and the zeta potential analysis was found to have well-colloidal stability (+ 76.9 mV) of NCs. Transmission electron microscopy (TEM) analysis determined that CS-Fe3O4 NCs were spherical with an average particle size of 27 nm. The X-ray diffractometer (XRD) spectrum ascertained the crystallinity of the hybrid NCs and the vibrating sample magnetometer (VSM) inferred the ferromagnetic behavior of the synthesized NCs. Furthermore, the significant antibacterial efficacy of NPs was demonstrated against foodborne bacterial pathogens, such as Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli), and the highest zone of inhibition was observed to be 11.5 mm and 13.5 mm in CS-Fe3O4 NCs, respectively. In comparison with Fe3O4 NPs, synergistic impacts of CS-Fe3O4 NCs displayed great antibacterial potential as exhibited by a clearly enlarged zone. Thus, CS-Fe3O4 NCs could be used as efficacious antimicrobial agents in food packaging and food preservation fields.
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Yang CY, Yang SM, Chen YY, Lu KC. Fabrication and Physical Properties of Single-Crystalline Βeta-FeSi 2 Nanowires. Nanoscale Res Lett 2020; 15:197. [PMID: 33052458 PMCID: PMC7560652 DOI: 10.1186/s11671-020-03425-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Accepted: 09/27/2020] [Indexed: 06/11/2023]
Abstract
In this study, self-catalyzed β-FeSi2 nanowires, having been wanted but seldom achieved in a furnace, were synthesized via chemical vapor deposition method where the fabrication of β-FeSi2 nanowires occurred on Si (100) substrates through the decomposition of the single-source precursor of anhydrous FeCl3 powders at 750-950 °C. We carefully varied temperatures, duration time, and the flow rates of carrier gases to control and investigate the growth of the nanowires. The morphology of the β-FeSi2 nanowires was observed with scanning electron microscopy (SEM), while the structure of them was analyzed with X-ray diffraction (XRD) and transmission electron microscopy (TEM). The growth mechanism has been proposed and the physical properties of the iron disilicide nanowires were measured as well. In terms of the magnetization of β-FeSi2, nanowires were found to be different from bulk and thin film; additionally, longer β-FeSi2 nanowires possessed better magnetic properties, showing the room-temperature ferromagnetic behavior. Field emission measurements demonstrate that β-FeSi2 nanowires can be applied in field emitters.
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Affiliation(s)
- Chih-Yung Yang
- Department of Materials Science and Engineering, National Cheng Kung University, Tainan, 701, Taiwan
| | - Shu-Meng Yang
- Department of Materials Science and Engineering, National Cheng Kung University, Tainan, 701, Taiwan
| | - Yu-Yang Chen
- Department of Materials Science and Engineering, National Cheng Kung University, Tainan, 701, Taiwan
| | - Kuo-Chang Lu
- Department of Materials Science and Engineering, National Cheng Kung University, Tainan, 701, Taiwan.
- Center for Micro/Nano Science and Technology, National Cheng Kung University, Tainan, 701, Taiwan.
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Rezazadeh L, Sharafi S, Schaffie M, Ranjbar M. Application of oxidation-reduction potential (ORP) as a controlling parameter during the synthesis of Fe 3O 4@PVA nanocomposites from industrial waste (raffinate). Environ Sci Pollut Res Int 2020; 27:32088-32099. [PMID: 32506412 DOI: 10.1007/s11356-020-09436-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Accepted: 05/25/2020] [Indexed: 06/11/2023]
Abstract
The objective of this study was to develop a process for the synthesis of magnetite nanocomposites from raffinate of hydrometallurgical plants containing iron ions. Towards this goal, a three-step process was developed. After the reduction of Fe(III) to Fe(II) in the first stage, Al3+ in the raffinate was precipitated as Al(OH)3 and finally magnetite NPs were synthesized by chemical co-precipitation method via controlling the oxidation-reduction potentials (ORPs). The produced nanomaterials were analyzed using XRD, TEM, VSM, TGA, and FTIR. The TG, XPS, and FTIR results affirmed the existence of PVA while TEM images illustrated the spherical nanoparticles with an average size of about 19 ± 4 nm. Evaluation of VSM data indicated the highly ferromagnetic behavior for Fe3O4 and Fe3O4@PVA products at the room temperature with a saturation magnetization of 46.98 and 35.78 emu/g, respectively.
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Affiliation(s)
- Laleh Rezazadeh
- Department of Metallurgy and Materials Science, School of Engineering, Shahid Bahonar University of Kerman, Kerman, Iran.
| | - Shahriar Sharafi
- Department of Metallurgy and Materials Science, School of Engineering, Shahid Bahonar University of Kerman, Kerman, Iran
| | - Mahin Schaffie
- Mineral Industries Research Center, Shahid Bahonar University of Kerman, Kerman, Iran
| | - Mohammad Ranjbar
- Mineral Industries Research Center, Shahid Bahonar University of Kerman, Kerman, Iran
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Oyetunde T, Omorogie MO, O'Brien P. Ferromagnetic FeSe 2 from a mixed sulphur-selenium complex of iron [Fe{(SePPh 2NPPh 2S) 2N} 3] through pyrolysis. Heliyon 2020; 6:e03763. [PMID: 32346632 PMCID: PMC7182788 DOI: 10.1016/j.heliyon.2020.e03763] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2019] [Revised: 02/21/2020] [Accepted: 04/06/2020] [Indexed: 11/19/2022] Open
Abstract
Iron (III) thioselenoimidodiphosphinate complex, Fe{(SePPh2NPPh2S)2N}3], was synthesized from the ligand [Ph2P(S)HNP(Se)Ph2], and the complex employed as the combined source of the targeted elements (Fe and Se) to generate orthorhombic FeSe2. This was achieved by thermolysis using a quartz glass tube, under reduced pressure at 500 °C during 1 h 30 min. The crystalline product was revealed by X-ray diffraction (XRD), while the morphology consisted of polygonal crystallites according to the scanning electron microscopy (SEM) studies. Superconducting quantum interference device (SQUID) measurements on the material confirmed its ferromagnetism as observed from the magnetization curve, indicated by the field-cooled and zero field-cooled conditions under a magnetic field of 100 Oe. This ferromagnetic material, FeSe2 finds useful application in producing electrical semiconductors.
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Affiliation(s)
- Temidayo Oyetunde
- Centre for Chemical and Biochemical Research (CCBR), Department of Chemical Sciences, Redeemer's University, Ede, P.M.B. 230, Osun State, 232102, Nigeria
- School of Chemistry and School of Materials, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
- Corresponding author.
| | - Martins O. Omorogie
- Centre for Chemical and Biochemical Research (CCBR), Department of Chemical Sciences, Redeemer's University, Ede, P.M.B. 230, Osun State, 232102, Nigeria
- Water Science and Technology Research Unit, African Centre of Excellence for Water and Environmental Research (ACEWATER), Redeemer's University, Ede, P.M.B. 230, Osun State, 232102, Nigeria
- Corresponding author.
| | - Paul O'Brien
- School of Chemistry and School of Materials, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
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Sabir B, Murtaza G, Khalil RMA. Ab-initio prediction of structure stability, electromagnetic, optical and thermoelectric behavior of orthorhombic LaXO 3 (X= Cr, Mn, Fe): For device application. J Mol Graph Model 2019; 94:107482. [PMID: 31683154 DOI: 10.1016/j.jmgm.2019.107482] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 10/02/2019] [Accepted: 10/18/2019] [Indexed: 11/15/2022]
Abstract
In this paper, theoretical calculations for electronic band structure, the density of states, the optical and thermoelectric response of orthorhombic LaXO3 (X = Cr, Mn, Fe) compounds are calculated. The Full Potential Linearized Augmented Plane Wave plus local orbital (FP-LAPW + lo) method is used in the context of density functional theory. Band gaps of three compounds are determined using Wu Cohen Generalized Gradient approximation with additional U potential (WC-GGA + U). Ferromagnetism is observed due to strong p-d hybridization and is justified by observed magnetic moments across individual atoms and at interstitial regions, and exchange constants are also reported. Optical properties are explained by calculating real and imaginary parts of the dielectric function, refractive index (n), extinction coefficient (k), reflection coefficient (R), the absorption coefficient (α), and energy loss spectrum (L). High value of dielectric constant, very small reflectivity and lower energy loss factor in, visible to ultraviolet region favours them for optoelectronic devices. We also computed the thermoelectric properties, including Seebeck coefficient, thermal and electrical conductivity and power factor as a function of temperature by combining results from DFT and Boltzmann transport theory. The phonon dispersion curve shows the stability of the current structures.
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Affiliation(s)
- B Sabir
- Centre for Advanced Studies in Physics (CASP), GC University, Lahore, 54000, Pakistan
| | - G Murtaza
- Centre for Advanced Studies in Physics (CASP), GC University, Lahore, 54000, Pakistan.
| | - R M Arif Khalil
- Materials Simulation Research Laboratory (MSRL), Department of Physics, Bahauddin Zakariya University, Multan, Pakistan
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Lone IH, Aslam J, Radwan NRE, Bashal AH, Ajlouni AFA, Akhter A. Multiferroic ABO 3 Transition Metal Oxides: a Rare Interaction of Ferroelectricity and Magnetism. Nanoscale Res Lett 2019; 14:142. [PMID: 31016415 PMCID: PMC6478781 DOI: 10.1186/s11671-019-2961-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Accepted: 03/28/2019] [Indexed: 05/24/2023]
Abstract
This review article summarizes the development of different kinds of materials that evolved interest in all field of science particularly on new nano-materials which possess both electric and magnetic properties at the nanoscale. Materials of such kind possessing both magnetic and electric properties have tremendous applications and own an intensive research activity. These materials induce new properties which are particularly important in electronic and magnetic devices and even in the materials where magnetic property will change by electric field or vice versa. The discovery of such ferroic properties for scientific applications is the need of hour and spreads an exciting new area that has technical and commercial potential for the discovery of advanced materials. In recent studies, the actual path by which the multiferroic properties exist has been focused and new metal oxide compounds were discovered. The understanding of the structure of these compounds through research describes a wide range of applications and the challenges of these multiferroic materials that need to be explored. In this study, fundamental aspects and structural variations of ternary transition metal oxides have been covered which possess novel properties in storage devices such as hard disk platters and magnetic read heads.
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Affiliation(s)
- Irfan Hussain Lone
- Department of Chemistry, Faculty of Science Yanbu-30799, Taibah University, Al-Madina, Saudi Arabia.
| | - Jeenat Aslam
- Department of Chemistry, Faculty of Science Yanbu-30799, Taibah University, Al-Madina, Saudi Arabia
| | - Nagi R E Radwan
- Department of Chemistry, Faculty of Science Yanbu-30799, Taibah University, Al-Madina, Saudi Arabia
| | - Ali Habib Bashal
- Department of Chemistry, Taibah University, Al-Madina, 30002, Saudi Arabia
| | - Amin F A Ajlouni
- Department of Chemistry, Faculty of Science Yanbu-30799, Taibah University, Al-Madina, Saudi Arabia
| | - Arifa Akhter
- Department of Botany, Faculty of Science, Punjabi University, Patiala, Punjab, 147002, India
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14
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Lee JS, Han P, Song E, Kim D, Lee H, Labowsky M, Taavitsainen J, Ylä-Herttuala S, Hytönen J, Gülcher M, Perampaladas K, Sinusas AJ, Martin J, Mathur A, Fahmy TM. Magnetically Coated Bioabsorbable Stents for Renormalization of Arterial Vessel Walls after Stent Implantation. Nano Lett 2018; 18:272-281. [PMID: 29268605 DOI: 10.1021/acs.nanolett.7b04096] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
The insertion of a stent in diseased arteries is a common endovascular procedure that can be compromised by the development of short- and long-term inflammatory responses leading to restenosis and thrombosis, respectively. While treatment with drugs, either systemic or localized, has decreased the incidence of restenosis and thrombosis these complications persist and are associated with a high mortality in those that present with stent thrombosis. We reasoned that if stents could be made to undergo accelerated endothelialization in the deployed region, then such an approach would further decrease the occurrence of stent thrombosis and restenosis thereby improving clinical outcomes. Toward that objective, the first step necessitated efficient capture of progenitor stem cells, which eventually would become the new endothelium. To achieve this objective, we engineered intrinsic ferromagnetism within nonmagnetizable, biodegradable magnesium (Mg) bare metal stents. Mg stents were coated with biodegradable polylactide (PLA) polymer embedding magnetizable iron-platinum (FePt) alloy nanoparticles, nanomagnetic particles, nMags, which increased the surface area and hence magnetization of the stent. nMags uniformly distributed on stents enabled capture, under flow, up to 50 mL/min, of systemically injected iron-oxide-labeled (IO-labeled) progenitor stem cells. Critical parameters enhancing capture efficiency were optimized, and we demonstrated the generality of the approach by showing that nMag-coated stents can capture different cell types. Our work is a potential paradigm shift in engineering stents because implants are rendered as tissue in the body, and this "natural stealthiness" reduces or eliminates issues associated with pro-inflammatory immune responses postimplantation.
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Affiliation(s)
| | | | | | - D Kim
- Department of Pharmaceutical Sciences, Irma Lerma Rangel College of Pharmacy, Texas A&M Health Science Center , College Station, Texas 77843, United States
| | | | - M Labowsky
- Ansama Research LLC , Wayne, New Jersey 07470, United States
| | - J Taavitsainen
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland , Kuopio 70210, Finland
| | - S Ylä-Herttuala
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland , Kuopio 70210, Finland
| | - J Hytönen
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland , Kuopio 70210, Finland
| | - M Gülcher
- QualiMed Innovative Medizinprodukte GmbH , Winsen 21423, Germany
| | - K Perampaladas
- Magnus Life Science, Bloomsbury , London WC1E 6JF, United Kingdom
| | | | | | - A Mathur
- Department of Clinical Pharmacology, William Harvey Research Institute, Queen Mary University of London , London E1 4NS, United Kingdom
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15
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Guo K, Zhang R, Mou Q, Cui R, Deng C. Ferroelectric, Dielectric, Ferromagnetic, and Magnetoelectric Properties of BNF-NZF Bilayer Nanofilms Prepared via Sol-Gel Process. Nanoscale Res Lett 2016; 11:387. [PMID: 27599718 PMCID: PMC5013007 DOI: 10.1186/s11671-016-1592-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/10/2016] [Accepted: 08/16/2016] [Indexed: 06/06/2023]
Abstract
Bilayer magnetoelectric (ME) nanofilms composed of Bi0.9Nd0.1FeO3 (BNF) and Ni0.55Zn0.45Fe2O4 (NZF) were fabricated on the Pt(111)/Ti/SiO2/Si(100) substrates via sol-gel and a subsequent rapid thermal process with different growth sequences of BNF and NZF forming the following layered structures: BNF/NZF and NZF/BNF. The phase composition, microstructure, and ferroelectric, dielectric, ferromagnetic, and ME coupling properties of the composites were investigated at room temperature. Structural characterization by X-ray diffraction and scanning electron microscopy showed that there are no other impurity phases but BNF and NZF, and the nucleation barrier caused that it is easier for NZF and BNF to grow on each other rather than on the surface of Pt/Ti/SiO2/Si. The tests of the physical properties indicated that such heterostructures present both good ferroelectric, ferromagnetic, and dielectric properties and the in-plane ME coupling coefficient α E at room temperature but some discrepancies also exist, which can be attributed to an interfacial effect, in other words, the deposition sequences of the constituent phases have a great influence on the properties of bilayer films.
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Affiliation(s)
- Kaixin Guo
- Key Laboratory of Electronic Composites of Guizhou Province, College of Big Data and Information Engineering, Guizhou University, Guiyang, 550025, China
| | - Rongfen Zhang
- Key Laboratory of Electronic Composites of Guizhou Province, College of Big Data and Information Engineering, Guizhou University, Guiyang, 550025, China
| | - Qingfeng Mou
- Key Laboratory of Electronic Composites of Guizhou Province, College of Big Data and Information Engineering, Guizhou University, Guiyang, 550025, China
| | - Ruirui Cui
- Key Laboratory of Electronic Composites of Guizhou Province, College of Big Data and Information Engineering, Guizhou University, Guiyang, 550025, China
| | - Chaoyong Deng
- Key Laboratory of Electronic Composites of Guizhou Province, College of Big Data and Information Engineering, Guizhou University, Guiyang, 550025, China.
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16
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Yamamoto K, Nakayama Y, Yamamoto I, Matsusue Y, Shimotsuji H, Kirita T. A Ferromagnetic Foreign Body at the Lateral Aspect of the Mandibular Ramus in a Medically Compromised Patient. Open Dent J 2016; 10:390-4. [PMID: 27583049 PMCID: PMC4988091 DOI: 10.2174/1874210616021001390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2015] [Revised: 06/06/2016] [Accepted: 06/24/2016] [Indexed: 11/22/2022] Open
Abstract
A case of a ferromagnetic foreign body in a medically compromised patient was reported. The patient was a 45-year-old male who consulted our department complaining of a foreign body accidentally impacted in the right cheek. X-ray examination revealed a foreign body at the lateral aspect of the right mandibular ramus. The removal of the foreign body was scheduled, but the patient did not return for the procedure. After 8 years he revisited our department for the removal of the foreign body, because it had been found to be ferromagnetic and a barrier to MRI examination. X-ray examination confirmed the foreign body was located at the same site as 8 years prior. Although the patient was suffering from liver cirrhosis with thrombocytopenia and leukopenia, the foreign body was successfully removed under general anesthesia. The foreign body was 12 × 5 × 1 mm, weighed 0.48 g, and was ferromagnetic. The patient’s postoperative course was uneventful. X-ray examination confirmed the removal of the foreign body. Since the surgery, the patient has been in generally stable condition with no complications. This case was a rare example of a foreign body that needed to be removed for medical examination.
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Affiliation(s)
- K Yamamoto
- Department of Oral and Maxillofacial Surgery, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8522, Japan
| | - Y Nakayama
- Department of Oral and Maxillofacial Surgery, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8522, Japan
| | - I Yamamoto
- Department of Oral and Maxillofacial Surgery, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8522, Japan
| | - Y Matsusue
- Department of Oral and Maxillofacial Surgery, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8522, Japan
| | - H Shimotsuji
- Department of Oral and Maxillofacial Surgery, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8522, Japan
| | - T Kirita
- Department of Oral and Maxillofacial Surgery, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8522, Japan
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17
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Li FX, Voccio JP, Sammartino M, Ahn M, Hahn S, Bascuñán J, Iwasa Y. A Theoretical Design Approach for Passive Shimming of a Magic-Angle-Spinning NMR Magnet. IEEE Trans Appl Supercond 2016; 26:4300404. [PMID: 27092026 PMCID: PMC4833395 DOI: 10.1109/tasc.2015.2512540] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
This paper presents a passive shimming design approach for a magic-angle-spinning (MAS) NMR magnet. In order to achieve a 1.5-T magic-angle field in NMR samples, we created two independent orthogonal magnetic vector fields by two separate coils: the dipole and solenoid. These two coils create a combined 1.5-T magnetic field vector directed at the magic angle (54.74° from the spinning axis). Additionally, the stringent magnetic field homogeneity requirement of the MAS magnet is the same as that of a solenoidal NMR magnet. The challenge for the magic-angle passive shimming design is to correct both the dipole and solenoid magnetic field spherical harmonics with one set of iron pieces, the so-called ferromagnetic shimming. Furthermore, the magnetization of the iron pieces is produced by both the dipole and solenoid coils. In our design approach, a matrix of 2 mm by 5 mm iron pieces with different thicknesses was attached to a thin-walled tube, 90-mm diameter and 40-mm high. Two sets of spherical harmonic coefficients were calculated for both the dipole and solenoid coil windings. By using the multiple-objective linear programming optimization technique and coordinate transformations, we have designed a passive shimming set that can theoretically reduce 22 lower-order spherical harmonics and improve the homogeneity of our MAS NMR magnet.
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Affiliation(s)
- Frank X Li
- Youngstown State University, Youngstown, Ohio 44555
| | - John P Voccio
- Francis Bitter Magnet Laboratory of MIT, Cambridge, MA 02139 USA
| | | | - Minchul Ahn
- Francis Bitter Magnet Laboratory of MIT, Cambridge, MA 02139 USA
| | - Seungyong Hahn
- Francis Bitter Magnet Laboratory of MIT, Cambridge, MA 02139 USA
| | - Juan Bascuñán
- MIT Francis Bitter Magnet Laboratory, Plasma Science and Fusion Center, Cambridge, MA 02139
| | - Yukikazu Iwasa
- MIT Francis Bitter Magnet Laboratory, Plasma Science and Fusion Center, Cambridge, MA 02139
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18
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Bian L, Bao L, Wang J, Lei J. In situ preparation of monodispersed Ag/polyaniline/Fe3O4 nanoparticles via heterogeneous nucleation. Nanoscale Res Lett 2013; 8:309. [PMID: 23819820 PMCID: PMC3735393 DOI: 10.1186/1556-276x-8-309] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2013] [Accepted: 06/26/2013] [Indexed: 06/02/2023]
Abstract
Acrylic acid and styrene were polymerized onto monodispersed Fe3O4 nanoparticles using a grafting copolymerization method. Aniline molecules were then bonded onto the Fe3O4 nanoparticles by electrostatic self-assembly and further polymerized to obtain uniform polyaniline/Fe3O4 (PANI/Fe3O4) nanoparticles (approximately 35 nm). Finally, monodispersed Ag/PANI/Fe3O4 nanoparticles were prepared by an in situ reduction reaction between emeraldine PANI and silver nitrate. Fourier transform infrared and UV-visible spectrometers and a transmission electron microscope were used to characterize both the chemical structure and the morphology of the resulting nanoparticles.
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Affiliation(s)
- Longchun Bian
- School of Chemical Science and Technology, Yunnan University, Kunming 650091, People's Republic of China
| | - Lixia Bao
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, People's Republic of China
| | - Jiliang Wang
- School of Chemical Science and Technology, Yunnan University, Kunming 650091, People's Republic of China
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, People's Republic of China
| | - Jingxin Lei
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, People's Republic of China
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19
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Yang H, Yu S, Lau S, Herng T, Tanemura M. Ultraviolet Laser Action in Ferromagnetic Zn1-xFexO Nanoneedles. Nanoscale Res Lett 2009; 5:247-251. [PMID: 20652128 PMCID: PMC2893907 DOI: 10.1007/s11671-009-9473-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/13/2009] [Accepted: 10/16/2009] [Indexed: 05/29/2023]
Abstract
Fe-doped ZnO nanoneedles (NDs) were fabricated by an Ar+ ion sputtering technique operated at room temperature. The as-grown samples show both ferromagnetic and lasing properties. The saturated magnetization moment was measured from 0.307 to 0.659 emu cm-3 at the field of 10 kOe with various Fe concentrations. Intense ultraviolet random lasing emission was observed from Zn1 - xFexO NDs at room temperature. The X-ray photoelectron spectroscopy result reveals that the doped Fe atoms occupy the Zn sites and lead to a decrease in oxygen deficiency.
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Affiliation(s)
- Hy Yang
- School of Electrical and Electronic Engineering, Nanyang Technological University, Nanyang, 639798, Singapore.
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