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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] [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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2
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Baitinger M, Böhme B, Wagner FR, Schwarz U. Zintl Defects in Intermetallic Clathrates. Z Anorg Allg Chem 2020. [DOI: 10.1002/zaac.202000107] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Michael Baitinger
- Max‐Planck‐Institut für Chemische Physik fester Stoffe Nöthnitzer Straße 40 01187 Dresden Germany
| | - Bodo Böhme
- Max‐Planck‐Institut für Chemische Physik fester Stoffe Nöthnitzer Straße 40 01187 Dresden Germany
| | - Frank R. Wagner
- Max‐Planck‐Institut für Chemische Physik fester Stoffe Nöthnitzer Straße 40 01187 Dresden Germany
| | - Ulrich Schwarz
- Max‐Planck‐Institut für Chemische Physik fester Stoffe Nöthnitzer Straße 40 01187 Dresden Germany
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3
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Ovchinnikov A, Smetana V, Mudring AV. Metallic alloys at the edge of complexity: structural aspects, chemical bonding and physical properties. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2020; 32:243002. [PMID: 31935688 DOI: 10.1088/1361-648x/ab6b87] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Complex metallic alloys belong to the vast family of intermetallic compounds and are hallmarked by extremely large unit cells and, in many cases, extensive crystallographic disorder. Early studies of complex intermetallics were focusing on the elucidation of their crystal structures and classification of the underlying building principles. More recently, ab initio computational analysis and detailed examination of the physical properties have become feasible and opened new perspectives for these materials. The present review paper provides a summary of the literature data on the reported compositions with exceptional structural complexity and their properties, and highlights the factors leading to the emergence of their crystal structures and the methods of characterization and systematization of these compounds.
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Affiliation(s)
- Alexander Ovchinnikov
- Department of Materials and Environmental Chemistry, Stockholm University, Svante Arrhenius väg 16 C, 10691 Stockholm, Sweden
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4
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Bhattacharya A. Deviation from guest dominated glass like lattice dynamics in prototypical ternary Ba 8Ni x Ge[Formula: see text] clathrates. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2020; 32:175502. [PMID: 31935696 DOI: 10.1088/1361-648x/ab6b89] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Intermetallic guest filled clathrate cages have been identified as promising materials for thermoelectric applications. The structure, electronic structure, and phonon dynamics of type-I Ba filled Ni substituted Ge clathrates have been explored using density-functional theory. The formation energy of type-I Ba8Ni x Ge[Formula: see text] clathrates with y vacancies [Formula: see text] in their framework is calculated as a function of concentration of Ni substitution x. Metal substitution i.e. with Ni destabilized the framework vacancies resulting in a framework devoid of vacancies beyond a particular concentration of Ni substituition (for [Formula: see text]). By tuning the concentration of Ni in the framework, n-type to p -type doping can be achieved while retaining the compositional homogeinity. Furthermore, Ni substitution in the framework lowered the thermal conductivity of these compounds. Results of molecular dynamics simulations showed that with the increase in temperature the guest, the substitutional host as well as the host atoms rattled to collectively lower the lattice thermal conductivity of these clathrates. This is found to be contradictory to the concept of guest dominated glass like phonon dynamics in these compounds.
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Affiliation(s)
- Amrita Bhattacharya
- Department of Metallurgical Engineering and Materials Science, Indian Institute of Technology, Bombay, Powai-400076, Mumbai, Maharashtra, India
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5
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Hobbis D, Shi W, Popescu A, Wei K, Baumbach RE, Wang H, Woods LM, Nolas GS. Synthesis, transport properties and electronic structure of p-type Cu 1+xMn 2-xInTe 4 (x = 0, 0.2, 0.3). Dalton Trans 2020; 49:2273-2279. [PMID: 32016192 DOI: 10.1039/c9dt04069b] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The synthesis, electronic structure and temperature dependent transport properties of polycrystalline Cu1+xMn2-xInTe4 (x = 0, 0.2, 0.3) are reported for the first time. These quaternary chalcogenides were synthesized by direct reaction of the elements, followed by solid state annealing and hot press densification. The thermal conductivity is low for all specimens and intrinsic to the material system. Furthermore, the off-stoichiometry specimens illustrate the sensitivity of the transport properties to stoichiometry, with a greater than two-orders-of magnitude increase in carrier concentration with increased Cu content. First principles calculations of the electronic structure are also reported, and are in agreement with the experimental data. This fundamental investigation shows the potential towards further optimization of the electrical properties that, in addition to the intrinsically low thermal conductivity, provides a basis for further research into the viability of this material system for potential energy-related applications.
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Affiliation(s)
- Dean Hobbis
- Department of Physics, University of South Florida, Tampa, FL 33620, USA.
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6
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Inhomogeneity and anisotropy of chemical bonding and thermoelectric properties of materials. J SOLID STATE CHEM 2019. [DOI: 10.1016/j.jssc.2018.12.055] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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7
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Baran V, Hlukhyy V, Fässler TF. A New Type of 2 × 2 × 2 Superstructure of Clathrate-I with I43 dSymmetry in A8Sn 46-x-yTl x⬜ y( A= Rb, Cs). Z Anorg Allg Chem 2018. [DOI: 10.1002/zaac.201800290] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Volodymyr Baran
- Department of Chemistry; Technische Universität München; Lichtenbergstr. 4 85747 Garching Germany
| | - Viktor Hlukhyy
- Department of Chemistry; Technische Universität München; Lichtenbergstr. 4 85747 Garching Germany
| | - Thomas. F. Fässler
- Department of Chemistry; Technische Universität München; Lichtenbergstr. 4 85747 Garching Germany
- Heinz Maier-Leibnitz Zentrum; Technische Universität München; Lichtenbergstr. 1 85747 Garching Germany
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8
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Dopilka A, Zhao R, Weller JM, Bobev S, Peng X, Chan CK. Experimental and Computational Study of the Lithiation of Ba 8Al yGe 46- y Based Type I Germanium Clathrates. ACS APPLIED MATERIALS & INTERFACES 2018; 10:37981-37993. [PMID: 30360052 DOI: 10.1021/acsami.8b11509] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
In this work, we investigate the electrochemical properties of Ba8Al yGe46- y ( y = 0, 4, 8, 12, 16) clathrates prepared by arc-melting. These materials have cage-like structures with large cavity volumes and can also have vacancies on the Ge framework sites, features which may be used to accommodate Li. Herein, a structural, electrochemical, and theoretical investigation is performed to explore these materials as anodes in Li-ion batteries, including analysis of the effect of the Al content and framework vacancies on the observed electrochemical properties. Single-crystal X-ray diffraction (XRD) studies indicate the presence of vacancies at the 6c site of the clathrate framework as the Al content decreases, and the lithiation potentials and capacities are observed to decrease as the degree of Al substitution increases. From XRD, electrochemical, and transmission electron microscopy analysis, we find that all of the clathrate compositions undergo two-phase reactions to form Li-rich amorphous phases. This is different from the behavior observed in Si clathrate analogues, where there is no amorphous phase transition during electrochemical lithiation nor discernible changes to the lattice constant of the bulk structure. From density functional theory calculations, we find that Li insertion into the three framework vacancies in Ba8Ge43 is energetically favorable, with a calculated lithiation voltage of 0.77 V versus Li/Li+. However, the calculated energy barrier for Li diffusion between vacancies and around Ba guest atoms is at least 1.6 eV, which is too high for significant room-temperature diffusion. These results show that framework vacancies in the Ge clathrate structure are unlikely to significantly contribute to lithiation processes unless the Ba guest atoms are absent, but suggest that guest atom vacancies could open diffusion paths for Li, allowing for empty framework positions to be occupied.
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Affiliation(s)
- Andrew Dopilka
- Materials Science and Engineering, School for Engineering of Matter, Transport and Energy , Arizona State University , P.O. Box 876106, Tempe , Arizona 85827 , United States
| | - Ran Zhao
- School of Molecular Sciences , Arizona State University , P.O. Box 871604, Tempe , Arizona 85287 , United States
| | - J Mark Weller
- Materials Science and Engineering, School for Engineering of Matter, Transport and Energy , Arizona State University , P.O. Box 876106, Tempe , Arizona 85827 , United States
| | - Svilen Bobev
- Department of Chemistry and Biochemistry , University of Delaware , Newark , Delaware 19716 , United States
| | - Xihong Peng
- College of Integrative Sciences and Arts , Arizona State University Polytechnic Campus , Mesa , Arizona 85212 , United States
| | - Candace K Chan
- Materials Science and Engineering, School for Engineering of Matter, Transport and Energy , Arizona State University , P.O. Box 876106, Tempe , Arizona 85827 , United States
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9
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Sassi S, Candolfi C, Dauscher A, Lenoir B, Koza MM. Inelastic neutron scattering study of the lattice dynamics of the homologous compounds (PbSe) 5(Bi 2Se 3) 3m (m = 1, 2 and 3). Phys Chem Chem Phys 2018; 20:14597-14607. [PMID: 29766168 DOI: 10.1039/c8cp01277f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report on the inelastic response of the homologous compounds (PbSe)5(Bi2Se3)3m for m = 1, 2 and 3 followed in a broad temperature range (50-500 K) using high-resolution powder inelastic neutron scattering experiments. These results are complemented by low-temperature measurements of the specific heat (2-300 K). The evolution of the anisotropic crystal structure of these compounds with varying m, built from alternate Pb-Se and mBi-Se layers, only weakly influences the generalized phonon density of states. In all the three compounds, intense inelastic signals, likely mainly associated with the dynamics of the Pb atoms, are observed in the 4.5-6 meV low-energy range. The response of these low-energy modes to temperature variations indicates a conventional quasi-harmonic behavior over the whole temperature range investigated. The modes located above 8 meV show a minor temperature effect regardless of the value of m. The low-energy excess of vibrational modes manifests itself in the low-temperature specific heat as a pronounced peak in the Cp(T)/T3 data near 10 K. The lack of significant anharmonicity beyond that associated with the thermal expansion of the lattice suggests that the inherent disorder in the monoclinic unit cell and scattering at interlayer interfaces are the most important ingredients that limit the heat transport in this series of compounds.
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Affiliation(s)
- Selma Sassi
- Institut Jean Lamour, UMR 7198 CNRS, Université de Lorraine, 2 allée André Guinier-Campus ARTEM, BP 50840, 54011 Nancy Cedex, France.
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10
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Stefanoski S, Finkelstein GJ, Ward MD, Zeng T, Wei K, Bullock ES, Beavers CM, Liu H, Nolas GS, Strobel TA. Zintl Ions within Framework Channels: The Complex Structure and Low-Temperature Transport Properties of Na 4Ge 13. Inorg Chem 2018; 57:2002-2012. [PMID: 29400457 DOI: 10.1021/acs.inorgchem.7b02914] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Single crystals of a complex Zintl compound with the composition Na4Ge13 were synthesized for the first time using a high-pressure/high-temperature approach. Single-crystal diffraction of synchrotron radiation revealed a hexagonal crystal structure with P6/m space group symmetry that is composed of a three-dimensional sp3 Ge framework punctuated by small and large channels along the crystallographic c axis. Na atoms are inside hexagonal prism-based Ge cages along the small channels, while the larger channels are occupied by layers of disordered sixfold Na rings, which are in turn filled by disordered [Ge4]4- tetrahedra. This compound is the same as "Na1-xGe3+z" reported previously, but the availability of single crystals allowed for more complete structural determination with a formula unit best described as Na4Ge12(Ge4)0.25. The compound is the first known example of a guest-host structure where discrete Zintl polyanions are confined inside the channels of a three-dimensional covalent framework. These features give rise to temperature-dependent disorder, as confirmed by first-principles calculations and physical properties measurements. The availability of single-crystal specimens allowed for measurement of the intrinsic low-temperature transport properties of this material and revealed its semiconductor behavior, which was corroborated by theoretical calculations.
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Affiliation(s)
- Stevce Stefanoski
- Geophysical Laboratory, Carnegie Institution of Washington , Washington, D.C. 20015, United States.,Department of Physics, Benedictine University , Lisle, Illinois 60532, United States
| | - Gregory J Finkelstein
- Seismological Laboratory, California Institute of Technology , Pasadena, California 91125, United States
| | - Matthew D Ward
- Geophysical Laboratory, Carnegie Institution of Washington , Washington, D.C. 20015, United States
| | - Tao Zeng
- Department of Chemistry, Carleton University , Ottawa, ON K1S5B6, Canada
| | - Kaya Wei
- Department of Physics, University of South Florida , Tampa, Florida 33620, United States
| | - Emma S Bullock
- Geophysical Laboratory, Carnegie Institution of Washington , Washington, D.C. 20015, United States
| | - Christine M Beavers
- Advanced Light Source, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States.,Department of Earth and Planetary Sciences, University of California Santa Cruz , Santa Cruz, California 95064, United States
| | - Hanyu Liu
- Geophysical Laboratory, Carnegie Institution of Washington , Washington, D.C. 20015, United States
| | - George S Nolas
- Department of Physics, University of South Florida , Tampa, Florida 33620, United States
| | - Timothy A Strobel
- Geophysical Laboratory, Carnegie Institution of Washington , Washington, D.C. 20015, United States
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11
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Sassi S, Candolfi C, Delaizir G, Migot S, Ghanbaja J, Gendarme C, Dauscher A, Malaman B, Lenoir B. Crystal Structure and Transport Properties of the Homologous Compounds (PbSe) 5(Bi 2Se 3) 3m (m = 2, 3). Inorg Chem 2017; 57:422-434. [PMID: 29257669 DOI: 10.1021/acs.inorgchem.7b02656] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We report on a detailed investigation of the crystal structure and transport properties in a broad temperature range (2-723 K) of the homologous compounds (PbSe)5(Bi2Se3)3m for m = 2, 3. Single-crystal X-ray diffraction data indicate that the m = 2, 3 compounds crystallize in the monoclinic space groups C2/m (No. 12) and P21/m (No. 11), respectively. In agreement with diffraction data, high-resolution transmission electron microscopy analyses carried out on single crystals show that the three-dimensional crystal structures are built from alternating Pb-Se and m Bi-Se layers stacked along the a axis in both compounds. Scanning electron microcopy and electron-probe microanalyses reveal deviations from the nominal stoichiometry, suggesting a domain of existence in the pseudo binary phase diagram at 873 K. The complex atomic-scale structures of these compounds lead to very low lattice thermal conductivities κL that approach the glassy limit at high temperatures. A comparison of the κL values across this series unveiled an unexpected increase with increasing m from m = 1 to m = 3, in contrast to the expectation that increasing the structural complexity should tend to lower the thermal transport. This result points to a decisive role played by the Pb-Se/Bi-Se interfaces in limiting κL in this series. Both compounds behave as heavily doped n-type semiconductors with relatively low electrical resistivity and thermopower values. As a result, moderate peak ZT values of 0.25 and 0.20 at 700 K were achieved in the m = 2, 3 compounds, respectively. The inherent poor ability of these structures to conduct heat suggests that these homologous compounds may show interesting thermoelectric properties when properly optimized by extrinsic dopants.
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Affiliation(s)
- Selma Sassi
- Institut Jean Lamour, UMR 7198 CNRS-Université de Lorraine , 2 allée André Guinier-Campus ARTEM, 54011 Nancy, France
| | - Christophe Candolfi
- Institut Jean Lamour, UMR 7198 CNRS-Université de Lorraine , 2 allée André Guinier-Campus ARTEM, 54011 Nancy, France
| | - Gaëlle Delaizir
- Sciences des Procédés Céramique et de Traitement de Surface (SPCTS), UMR CNRS 7315-Univsersité de Limoges , Limoges, France
| | - Sylvie Migot
- Institut Jean Lamour, UMR 7198 CNRS-Université de Lorraine , 2 allée André Guinier-Campus ARTEM, 54011 Nancy, France
| | - Jaafar Ghanbaja
- Institut Jean Lamour, UMR 7198 CNRS-Université de Lorraine , 2 allée André Guinier-Campus ARTEM, 54011 Nancy, France
| | - Christine Gendarme
- Institut Jean Lamour, UMR 7198 CNRS-Université de Lorraine , 2 allée André Guinier-Campus ARTEM, 54011 Nancy, France
| | - Anne Dauscher
- Institut Jean Lamour, UMR 7198 CNRS-Université de Lorraine , 2 allée André Guinier-Campus ARTEM, 54011 Nancy, France
| | - Bernard Malaman
- Institut Jean Lamour, UMR 7198 CNRS-Université de Lorraine , 2 allée André Guinier-Campus ARTEM, 54011 Nancy, France
| | - Bertrand Lenoir
- Institut Jean Lamour, UMR 7198 CNRS-Université de Lorraine , 2 allée André Guinier-Campus ARTEM, 54011 Nancy, France
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12
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Hobbis D, Wei K, Wang H, Martin J, Nolas GS. Synthesis, Structure, Te Alloying, and Physical Properties of CuSbS2. Inorg Chem 2017; 56:14040-14044. [DOI: 10.1021/acs.inorgchem.7b02154] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Dean Hobbis
- Department of Physics, University of South Florida, Tampa, Florida 33620, United States
| | - Kaya Wei
- Department of Physics, University of South Florida, Tampa, Florida 33620, United States
| | - Hsin Wang
- Materials
Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Joshua Martin
- Material Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
| | - George S. Nolas
- Department of Physics, University of South Florida, Tampa, Florida 33620, United States
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13
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Fu J, Su X, Yan Y, Liu W, Zhang Z, She X, Uher C, Tang X. Thermoelectric properties of Cu/Ag doped type-III Ba24Ge100 clathrates. J SOLID STATE CHEM 2017. [DOI: 10.1016/j.jssc.2017.06.025] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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14
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Novikov VV, Matovnikov AV, Mitroshenkov NV, Kornev BI, Pilipenko KS, Likhanov MS, Shevelkov AV. Structural irregularities and peculiarities of low-temperature thermal properties of Sn 24P 19.4Br 8 clathrate. Dalton Trans 2017; 46:9110-9117. [PMID: 28664972 DOI: 10.1039/c7dt01196b] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Temperature changes of the heat capacity and unit cell parameters of Sn24P19.4Br8 clathrate were experimentally determined in the temperature range of 2 to 300 K. The data obtained were analyzed using Debye-Einstein approximation and taking into account the impact of both disorder in the host matrix and the presence of vacancies in the framework. Anomalous negative contribution to the thermal expansion was revealed and related to the defect mode influence on the clathrate thermal properties as a result of vibrations of two-level systems (TLS). The guest atoms that have the opportunity to occupy spatially close yet energetically non-equivalent positions in the asymmetric environment of the host matrix atoms play a principal role in the TLS formation. The results are compared with those previously obtained for semiclathrate Ge31P15Se8.
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Affiliation(s)
- V V Novikov
- Bryansk Physical Laboratory Petrovsky Bryansk State University, 14, Bezhitskaja St, 241036 Bryansk, Russia.
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15
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Wei K, Martin J, Maruyama S, Mori T, Nolas GS. Physical properties of madocite: A quaternary chalcogenide with very low thermal conductivity. J SOLID STATE CHEM 2017. [DOI: 10.1016/j.jssc.2017.04.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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16
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Zhang H, Peng W, Mu G, Hu T, Huang F, Xie X. Synthesis, Structure, and Properties of Clathrate Si30.3(8)P15.7(8)Se7.930(3). Chemistry 2017; 23:9505-9516. [DOI: 10.1002/chem.201700972] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Indexed: 11/10/2022]
Affiliation(s)
- Hui Zhang
- Key Laboratory of Functional Materials for InformaticsShanghai Institute of Microsystem and Information TechnologyChinese Academy of Sciences 865 Changning Road Shanghai 200050 P.R. China
- CAS Center for Excellence in Superconducting Electronics Shanghai 200050 P.R. China
| | - Wei Peng
- Key Laboratory of Functional Materials for InformaticsShanghai Institute of Microsystem and Information TechnologyChinese Academy of Sciences 865 Changning Road Shanghai 200050 P.R. China
- CAS Center for Excellence in Superconducting Electronics Shanghai 200050 P.R. China
| | - Gang Mu
- Key Laboratory of Functional Materials for InformaticsShanghai Institute of Microsystem and Information TechnologyChinese Academy of Sciences 865 Changning Road Shanghai 200050 P.R. China
- CAS Center for Excellence in Superconducting Electronics Shanghai 200050 P.R. China
| | - Tao Hu
- Key Laboratory of Functional Materials for InformaticsShanghai Institute of Microsystem and Information TechnologyChinese Academy of Sciences 865 Changning Road Shanghai 200050 P.R. China
- CAS Center for Excellence in Superconducting Electronics Shanghai 200050 P.R. China
| | - Fuqiang Huang
- CAS Center for Excellence in Superconducting Electronics Shanghai 200050 P.R. China
- State Key Laboratory of High Performance Ceramics and Superfine MicrostructureShanghai Institute of Ceramics InstitutionChinese Academy of Sciences 1295 Dingxi Road Shanghai 200050 P.R. China
| | - Xiaoming Xie
- Key Laboratory of Functional Materials for InformaticsShanghai Institute of Microsystem and Information TechnologyChinese Academy of Sciences 865 Changning Road Shanghai 200050 P.R. China
- CAS Center for Excellence in Superconducting Electronics Shanghai 200050 P.R. China
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17
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Synthesis and structures of type-I clathrates: Rb6Na2Ge44.89(1), Cs6Na2Zn4Ge42 and Cs6.40(1)Na1.60(1)Ga8Ge38. J SOLID STATE CHEM 2016. [DOI: 10.1016/j.jssc.2016.07.024] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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18
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Zhang H, Mu G, Huang F, Xie X. New clathrates of Rb7.50(1)Tl0.50(1)Ge46and K7.62(1)Tl0.38(1)Ge45.34(3). RSC Adv 2016. [DOI: 10.1039/c6ra14614g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Rb7.50(1)Tl0.50(1)Ge46and K7.62(1)Tl0.38(1)Ge45.34(3)are synthesized and characterized.
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Affiliation(s)
- Hui Zhang
- State Key Laboratory of Functional Materials for Informatics and Shanghai Center for Superconductivity
- Shanghai Institute of Microsystem and Information Technology
- Chinese Academy of Sciences
- Shanghai 200050
- China
| | - Gang Mu
- State Key Laboratory of Functional Materials for Informatics and Shanghai Center for Superconductivity
- Shanghai Institute of Microsystem and Information Technology
- Chinese Academy of Sciences
- Shanghai 200050
- China
| | - Fuqiang Huang
- State Key Laboratory of High Performance Ceramics and Superfine Microstructures
- Shanghai Institute of Ceramics
- Chinese Academy of Sciences
- Shanghai 200050
- China
| | - Xiaoming Xie
- State Key Laboratory of Functional Materials for Informatics and Shanghai Center for Superconductivity
- Shanghai Institute of Microsystem and Information Technology
- Chinese Academy of Sciences
- Shanghai 200050
- China
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19
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Candolfi C, Aydemir U, Koza MM, Baitinger M, Grin Y, Steglich F. Inelastic neutron scattering study of the lattice dynamics in the clathrate compound BaGe₅. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2015; 27:485401. [PMID: 26569574 DOI: 10.1088/0953-8984/27/48/485401] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We report inelastic neutron scattering (INS) measurements on the polycrystalline oP60-type clathrate BaGe5, whose crystal structure is related to the type-I clathrate Ba8Ge43□3 and to the cP124-clathrate Ba6Ge25. Our results show that BaGe5 exhibits a similar phonon density of states (PDOS) in the energy range 0-40 meV with respect to Ba8Ge43□3. The low-energy region of the PDOS spectrum (0-10 meV) consists of two peaks at 4.1 and 6.2 meV likely related to Ba-weighted modes. Compared to Ba8Ge43□3, the low-energy region of the phonon spectrum of BaGe5 shows a more complex structure, likely reflecting the presence of three distinct crystallographic sites for Ba. The specific heat data of BaGe5, reexamined in light of the INS results, indicate that the Ba-weighted modes dominate the low-temperature behavior of Cp.
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Affiliation(s)
- C Candolfi
- Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Str. 40, 01187 Dresden, Germany. Institut Jean Lamour, UMR 7198 CNRS-Université de Lorraine, Parc de Saurupt, CS 50840 F-54011 Nancy Cedex, France
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Fu J, Su X, Zheng Y, Xie H, Yan Y, Tang X, Uher C. Thermoelectric Properties of Ga/Ag Codoped Type-III Ba₂₄Ge₁₀₀ Clathrates with in Situ Nanostructures. ACS APPLIED MATERIALS & INTERFACES 2015; 7:19172-19178. [PMID: 26278209 DOI: 10.1021/acsami.5b04910] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Because of the low thermal conductivity and high electrical conductivity, type-III Ba24Ge100 clathrates are potentially of interest as power generation thermoelectric materials for midto-high temperature operations. Unfortunately, their too high intrinsic carrier concentration results in a quite low Seebeck coefficient. To reduce the carrier concentration, we prepared a series of Ga/Ag codoped type-III Ba24Ge100 clathrate specimens by vacuum melting and subsequently compacted by spark plasma sintering (SPS). Doping Ga-Ag on the sites of Ge reduces the concentration of electrons and, at higher concentrations, also leads to the in situ formation of BaGe2 nanoprecipitates detected by the microstructural analysis. As a result of doping, the Seebeck coefficient increases, the thermal conductivity decreases, and the dimensionless figure of merit ZT reaches a value of 0.34 at 873 K, more than three times the value obtained with undoped Ba24Ge100.
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Affiliation(s)
- Jiefei Fu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology , Wuhan 430070, China
| | - Xianli Su
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology , Wuhan 430070, China
| | - Yun Zheng
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology , Wuhan 430070, China
| | - Hongyao Xie
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology , Wuhan 430070, China
| | - Yonggao Yan
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology , Wuhan 430070, China
| | - Xinfeng Tang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology , Wuhan 430070, China
| | - Ctirad Uher
- Department of Physics, University of Michigan , Ann Arbor, Michigan 48109, United States
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Aydemir U, Candolfi C, Ormeci A, Baitinger M, Burkhardt U, Oeschler N, Steglich F, Grin Y. Electronic band structure and low-temperature transport properties of the type-I clathrate Ba8Ni(x)Ge(46-x-y□y). Dalton Trans 2015; 44:7524-37. [PMID: 25805335 DOI: 10.1039/c4dt03827d] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We present the evolution of the low-temperature thermodynamic, galvanomagnetic and thermoelectric properties of the type-I clathrate Ba8Ni(x)Ge(46-x-y□y) with the Ni concentration studied on polycrystalline samples with 0.0 ≤ x ≤ 6.0 by means of specific heat, Hall effect, electrical resistivity, thermopower and thermal conductivity measurements in the 2-350 K temperature range and supported by first-principles calculations. The experimental results evidence a 2a × 2a × 2a supercell described in the space group Ia3d for x ≤ 1.0 and a primitive unit cell a × a × a (space group Pm3n) above this Ni content. This concentration also marks the limit between a regime where both electrons and holes contribute to the electrical conduction (x ≤ 1.0) and a conventional, single-carrier regime (x > 1.0). This evolution is traced by the variations in the thermopower and Hall effect with x. In agreement with band structure calculations, increasing the Ni content drives the system from a nearly-compensated semimetallic state (x = 0.0) towards a narrow-band-gap semiconducting state (x = 4.0). A crossover from an n-type to a p-type conduction occurs when crossing the x = 4.0 concentration i.e. for x = 4.1. The solid solution Ba8Ni(x)Ge(46-x-y□y) therefore provides an excellent experimental platform to probe the evolution of the peculiar properties of the parent type-I clathrate Ba8Ge43□3 upon Ge/Ni substitution and filling up of the vacancies, which might be universal among the ternary systems at low substitution levels.
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Affiliation(s)
- U Aydemir
- Max-Planck-Institut für Chemische Physik fester Stoffe, 01187 Dresden, Germany.
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Liang Y, Carrillo-Cabrera W, Ormeci A, Böhme B, Baitinger M, Grin Y. The 2a0 × 2a0 × 2a0Superstructure in the Clathrate-I K8LixGe44-x/4□2-3x/4. Z Anorg Allg Chem 2015. [DOI: 10.1002/zaac.201400565] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Aydemir U, Zevalkink A, Ormeci A, Wang H, Ohno S, Bux S, Snyder GJ. Thermoelectric properties of the Zintl phases Yb5M2Sb6(M = Al, Ga, In). Dalton Trans 2015; 44:6767-74. [DOI: 10.1039/c4dt03773a] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Zintl compounds of Yb5M2Sb6(M = Al, Ga, and In) exhibit semimetallic properties with high p-type carrier concentrations, low resistivities and low Seebeck coefficients in agreement with our band structure calculations.
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Affiliation(s)
- Umut Aydemir
- Department of Applied Physics and Materials Science
- California Institute of Technology
- Pasadena
- USA
| | - Alex Zevalkink
- Thermal Energy Conversion Technologies Group
- Jet Propulsion Laboratory
- Pasadena
- USA
| | - Alim Ormeci
- Max Planck Institute for Chemical Physics of Solids
- Dresden
- Germany
| | - Heng Wang
- Department of Applied Physics and Materials Science
- California Institute of Technology
- Pasadena
- USA
| | - Saneyuki Ohno
- Department of Applied Physics and Materials Science
- California Institute of Technology
- Pasadena
- USA
| | - Sabah Bux
- Thermal Energy Conversion Technologies Group
- Jet Propulsion Laboratory
- Pasadena
- USA
| | - G. Jeffrey Snyder
- Department of Applied Physics and Materials Science
- California Institute of Technology
- Pasadena
- USA
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25
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Castillo R, Carrillo-Cabrera W, Schwarz U, Grin Y. Classical and Nonclassical Germanium Environments in High-Pressure BaGe5. Inorg Chem 2014; 54:1019-25. [DOI: 10.1021/ic502396p] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Rodrigo Castillo
- Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Straße 40, 01187 Dresden, Germany
| | - Wilder Carrillo-Cabrera
- Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Straße 40, 01187 Dresden, Germany
| | - Ulrich Schwarz
- Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Straße 40, 01187 Dresden, Germany
| | - Yuri Grin
- Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Straße 40, 01187 Dresden, Germany
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26
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Aydemir U, Candolfi C, Ormeci A, Baitinger M, Oeschler N, Steglich F, Grin AY. High temperature thermoelectric properties of the type-I clathrate Ba8NixGe46-x-y□y. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2014; 26:485801. [PMID: 25373324 DOI: 10.1088/0953-8984/26/48/485801] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Polycrystalline samples of the type-I clathrate Ba(8)Ni(x)Ge(46-x-y)□(y) were synthesized for 0.2 ⩽ x ⩽ 3.5 by melt quenching and for 3.5<x ⩽ 6.0 by melting with subsequent annealing at 700 °C. The maximum Ni content in the clathrate framework at this temperature was found to be x ≈ 4.2 atoms per unit cell. Thermoelectric and thermodynamic properties of the type-I clathrate were investigated from 300 to 700 K by means of electrical resistivity, thermopower, thermal conductivity and specific heat measurements. As the Ni content increases, the electronic properties gradually evolve from a metallic character (x < 3.5) towards a highly doped semiconducting state (x ⩾ 3.5). Below x ≈ 4.0 transport is dominated by electrons, while further addition of Ni (x ≈ 4.2) switches the electrical conduction to p-type. Maximum value of the dimensionless thermoelectric figure of merit ZT ≈ 0.2 was achieved at 500 K and 650 K for x ≈ 2.0 and x ≈ 3.8, respectively.
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Affiliation(s)
- U Aydemir
- Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Str. 40, 01187 Dresden, Germany. Koç University, Rumelifeneri Yolu, Sarıyer, Istanbul 34450, Turkey
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27
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Solid State Chemistry of Clathrate Phases: Crystal Structure, Chemical Bonding and Preparation Routes. THE PHYSICS AND CHEMISTRY OF INORGANIC CLATHRATES 2014. [DOI: 10.1007/978-94-017-9127-4_2] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Kirsanova MA, Mori T, Maruyama S, Matveeva M, Batuk D, Abakumov AM, Gerasimenko AV, Olenev AV, Grin Y, Shevelkov AV. Synthesis, Structure, and Transport Properties of Type-I Derived Clathrate Ge46–xPxSe8–y (x = 15.4(1); y = 0–2.65) with Diverse Host–Guest Bonding. Inorg Chem 2012; 52:577-88. [DOI: 10.1021/ic3011025] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Maria A. Kirsanova
- Department of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia
| | - Takao Mori
- International Center for Materials
Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 305-0044 Tsukuba, Japan
| | - Satofumi Maruyama
- International Center for Materials
Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 305-0044 Tsukuba, Japan
| | - Maria Matveeva
- EMAT, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium
| | - Dmitry Batuk
- EMAT, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium
| | - Artem M. Abakumov
- EMAT, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium
| | | | - Andrei V. Olenev
- “SineTheta” Ltd., Scientific Park of Lomonosov Moscow State University, 119991 Moscow,
Russia
| | - Yuri Grin
- Max-Planck-Institut für Chemische Physik fester Stoffe, Dresden,
Germany
| | - Andrei V. Shevelkov
- Department of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia
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29
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Liang Y, Böhme B, Ormeci A, Borrmann H, Pecher O, Haarmann F, Schnelle W, Baitinger M, Grin Y. A Clathrate-I Phase with Li-Ge Framework. Chemistry 2012; 18:9818-22. [DOI: 10.1002/chem.201202069] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2012] [Indexed: 11/11/2022]
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30
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Aydemir U, Candolfi C, Ormeci A, Borrmann H, Burkhardt U, Oztan Y, Oeschler N, Baitinger M, Steglich F, Grin Y. Synthesis, Crystal Structure, and Physical Properties of the Type-I Clathrate Ba8−δNix□ySi46–x–y. Inorg Chem 2012; 51:4730-41. [DOI: 10.1021/ic2027626] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- U. Aydemir
- Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Straße
40, 01187 Dresden, Germany
| | - C. Candolfi
- Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Straße
40, 01187 Dresden, Germany
| | - A. Ormeci
- Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Straße
40, 01187 Dresden, Germany
| | - H. Borrmann
- Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Straße
40, 01187 Dresden, Germany
| | - U. Burkhardt
- Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Straße
40, 01187 Dresden, Germany
| | - Y. Oztan
- Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Straße
40, 01187 Dresden, Germany
| | - N. Oeschler
- Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Straße
40, 01187 Dresden, Germany
| | - M. Baitinger
- Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Straße
40, 01187 Dresden, Germany
| | - F. Steglich
- Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Straße
40, 01187 Dresden, Germany
| | - Yu. Grin
- Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Straße
40, 01187 Dresden, Germany
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31
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Kirsanova MA, Reshetova LN, Olenev AV, Shevelkov AV. On the crystal structure of the germanium-based cationic clathrates [Ge38.3Sb7.7]I7.44, [Ge38.1P7.9]I8, and [Ge30.5Sn7.7P7.75]I7.88. RUSS J COORD CHEM+ 2012. [DOI: 10.1134/s1070328412030062] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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32
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Jung W, Kessens H, Ormeci A, Schnelle W, Burkhardt U, Borrmann H, Nguyen HD, Baitinger M, Grin Y. Synthesis, crystal structure and physical properties of the clathrate-I phase Ba8RhxSi46−x−y□y. Dalton Trans 2012; 41:13960-8. [PMID: 23027430 DOI: 10.1039/c2dt31432k] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Walter Jung
- Max-Planck-Institut für Chemische Physik fester Stoffe, Dresden, Germany
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33
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Kelm EA, Olenev AV, Bykov MA, Sobolev AV, Presniakov IA, Kulbachinskii VA, Kytin VG, Shevelkov AV. Synthesis, Crystal Structure, and Thermoelectric Properties of Clathrates in the Sn-In-As-I System. Z Anorg Allg Chem 2011. [DOI: 10.1002/zaac.201100287] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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34
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Kovnir K, Stockert U, Budnyk S, Prots Y, Baitinger M, Paschen S, Shevelkov AV, Grin Y. Introducing a Magnetic Guest to a Tetrel-Free Clathrate: Synthesis, Structure, and Properties of EuxBa8–xCu16P30 (0 ≤ x ≤ 1.5). Inorg Chem 2011; 50:10387-96. [DOI: 10.1021/ic201474h] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kirill Kovnir
- Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Straße 40, 01187 Dresden, Germany
- Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, California 95616, United States
| | - Ulrike Stockert
- Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Straße 40, 01187 Dresden, Germany
| | - Sergij Budnyk
- Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Straße 40, 01187 Dresden, Germany
| | - Yurii Prots
- Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Straße 40, 01187 Dresden, Germany
| | - Michael Baitinger
- Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Straße 40, 01187 Dresden, Germany
| | - Silke Paschen
- Institute of Solid State Physics, Vienna University of Technology, Wiedner Hauptstr. 8-10, 1040 Vienna, Austria
| | - Andrei V. Shevelkov
- Chemistry Department, Lomonosov Moscow State University, Leninskie Gory 1-3, 119991, Moscow, Russia
| | - Yuri Grin
- Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Straße 40, 01187 Dresden, Germany
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35
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Fukuoka H, Tomomitsu Y, Inumaru K. High-Pressure Synthesis and Superconductivity of a New Binary Barium Germanide BaGe3. Inorg Chem 2011; 50:6372-7. [DOI: 10.1021/ic200826d] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hiroshi Fukuoka
- Department of Applied Chemistry, Faculty of Engineering, Hiroshima University, Higashi-Hiroshima 739-8527, Japan.
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36
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Liang Y, Böhme B, Reibold M, Schnelle W, Schwarz U, Baitinger M, Lichte H, Grin Y. Synthesis of the Clathrate-I Phase Ba8−xSi46 via Redox Reactions. Inorg Chem 2011; 50:4523-8. [PMID: 21486020 DOI: 10.1021/ic2001859] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ying Liang
- Max-Planck Institute for Chemical Physics of Solids, Nöthnitzer Strasse 40, 01187 Dresden, Germany
| | - Bodo Böhme
- Max-Planck Institute for Chemical Physics of Solids, Nöthnitzer Strasse 40, 01187 Dresden, Germany
| | - Marianne Reibold
- Triebenberg Laboratory, Technical University Dresden, Zum Triebenberg 50, 01328 Dresden, Germany
| | - Walter Schnelle
- Max-Planck Institute for Chemical Physics of Solids, Nöthnitzer Strasse 40, 01187 Dresden, Germany
| | - Ulrich Schwarz
- Max-Planck Institute for Chemical Physics of Solids, Nöthnitzer Strasse 40, 01187 Dresden, Germany
| | - Michael Baitinger
- Max-Planck Institute for Chemical Physics of Solids, Nöthnitzer Strasse 40, 01187 Dresden, Germany
| | - Hannes Lichte
- Triebenberg Laboratory, Technical University Dresden, Zum Triebenberg 50, 01328 Dresden, Germany
| | - Yuri Grin
- Max-Planck Institute for Chemical Physics of Solids, Nöthnitzer Strasse 40, 01187 Dresden, Germany
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37
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Fukuoka H, Suekuni K, Onimaru T, Inumaru K. High-Pressure Synthesis and Superconductivity of a New Binary Lanthanum Germanide LaGe3 with Triangular Ge3 Cluster Units. Inorg Chem 2011; 50:3901-6. [DOI: 10.1021/ic102077k] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hiroshi Fukuoka
- Department of Applied Chemistry, Faculty of Engineering, Hiroshima University, Higashi-Hiroshima 739-8527, Japan.
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38
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Zhang H, Borrmann H, Oeschler N, Candolfi C, Schnelle W, Schmidt M, Burkhardt U, Baitinger M, Zhao JT, Grin Y. Atomic Interactions in the p-Type Clathrate I Ba8Au5.3Ge40.7. Inorg Chem 2011; 50:1250-7. [DOI: 10.1021/ic1016559] [Citation(s) in RCA: 135] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hui Zhang
- Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Strasse 40, 01187 Dresden, Germany
- Key Laboratory of Transparent Opto-Functional Inorganic Materials, Chinese Academy of Sciences (Shanghai Institute of Ceramics), 1295 Dingxi Road, 200050 Shanghai, China
| | - Horst Borrmann
- Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Strasse 40, 01187 Dresden, Germany
| | - Niels Oeschler
- Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Strasse 40, 01187 Dresden, Germany
| | - Christophe Candolfi
- Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Strasse 40, 01187 Dresden, Germany
| | - Walter Schnelle
- Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Strasse 40, 01187 Dresden, Germany
| | - Marcus Schmidt
- Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Strasse 40, 01187 Dresden, Germany
| | - Ulrich Burkhardt
- Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Strasse 40, 01187 Dresden, Germany
| | - Michael Baitinger
- Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Strasse 40, 01187 Dresden, Germany
| | - Jing-Tai Zhao
- Key Laboratory of Transparent Opto-Functional Inorganic Materials, Chinese Academy of Sciences (Shanghai Institute of Ceramics), 1295 Dingxi Road, 200050 Shanghai, China
| | - Yuri Grin
- Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Strasse 40, 01187 Dresden, Germany
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39
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Stefanoski S, Martin J, Nolas GS. Low temperature transport properties and heat capacity of single-crystal Na8Si46. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2010; 22:485404. [PMID: 21406746 DOI: 10.1088/0953-8984/22/48/485404] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The low temperature thermal conductivity, resistivity, and Seebeck coefficient of single-crystal Na(8)Si(46) are investigated revealing the intrinsic low temperature transport properties of this material. Metallic conduction is observed, with a higher residual resistance ratio than any other known type I clathrate. Heat capacity together with thermal conductivity provide insight into the Na disorder inside the polyhedra formed by the Si framework. Single-crystal structural refinement and thermal property analyses reveal anisotropic disorder for Na inside the tetrakaidecahedra due to a reduction in the symmetry inside these polyhedra, unlike that for Na inside the dodecahedra.
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Affiliation(s)
- S Stefanoski
- Department of Physics, University of South Florida, Tampa, FL 33620, USA
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40
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Aydemir U, Akselrud L, Carrillo-Cabrera W, Candolfi C, Oeschler N, Baitinger M, Steglich F, Grin Y. BaGe5: A New Type of Intermetallic Clathrate. J Am Chem Soc 2010; 132:10984-5. [DOI: 10.1021/ja104197c] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Umut Aydemir
- Max-Planck-Institut für Chemische Physik fester Stoffe, Dresden 01187, Germany
| | - Lev Akselrud
- Max-Planck-Institut für Chemische Physik fester Stoffe, Dresden 01187, Germany
| | | | - Christophe Candolfi
- Max-Planck-Institut für Chemische Physik fester Stoffe, Dresden 01187, Germany
| | - Niels Oeschler
- Max-Planck-Institut für Chemische Physik fester Stoffe, Dresden 01187, Germany
| | - Michael Baitinger
- Max-Planck-Institut für Chemische Physik fester Stoffe, Dresden 01187, Germany
| | - Frank Steglich
- Max-Planck-Institut für Chemische Physik fester Stoffe, Dresden 01187, Germany
| | - Yuri Grin
- Max-Planck-Institut für Chemische Physik fester Stoffe, Dresden 01187, Germany
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Nguyen LTK, Aydemir U, Baitinger M, Bauer E, Borrmann H, Burkhardt U, Custers J, Haghighirad A, Höfler R, Luther KD, Ritter F, Assmus W, Grin Y, Paschen S. Atomic ordering and thermoelectric properties of the n-type clathrate Ba8Ni3.5Ge42.1□0.4. Dalton Trans 2010; 39:1071-7. [DOI: 10.1039/b919791p] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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