1
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Yox P, Lee SJ, Wang LL, Jing D, Kovnir K. Crystal Structure and Properties of Layered Pnictides BaCuSi 2Pn 3 (Pn = P, As). Inorg Chem 2021; 60:5627-5634. [PMID: 33794094 DOI: 10.1021/acs.inorgchem.0c03636] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Two novel layered compounds BaCuSi2Pn3 (Pn = P, As) adopting new structure types are reported. As revealed by single-crystal X-ray diffraction, both compounds are composed of unique Cu-Si-Pn layers featuring CuPn3 and Si2Pn6 structural motifs found in other archetypal pnictide materials. The stacking of the isostructural Cu-Si-Pn layers is different for phosphide and arsenide compounds. Synthesis from elements aided by in situ synchrotron powder X-ray diffraction resulted in the obtainment of bulk powders with a minimized amount of admixtures. Experimentally measured physical properties of BaCuSi2As3 unexpectedly showed metal-like behavior at temperatures above 15 K, despite the fact that density functional theory calculations predict a small band gap of 0.4 eV. BaCuSi2As3 exhibits ultralow thermal conductivity, which can be explained by the combination of a layered crystal structure with alternating covalent and ionic bonding, which feature rattling of Cu atoms similar to that in tetrahedrites.
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Affiliation(s)
- Philip Yox
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States.,Ames Laboratory, U.S. Department of Energy, Ames, Iowa 50011, United States
| | - Shannon J Lee
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States.,Ames Laboratory, U.S. Department of Energy, Ames, Iowa 50011, United States
| | - Lin-Lin Wang
- Ames Laboratory, U.S. Department of Energy, Ames, Iowa 50011, United States
| | - Dapeng Jing
- Ames Laboratory, U.S. Department of Energy, Ames, Iowa 50011, United States.,Materials Analysis and Research Laboratory, Iowa State University, Ames, Iowa 50011, United States
| | - Kirill Kovnir
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States.,Ames Laboratory, U.S. Department of Energy, Ames, Iowa 50011, United States
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2
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Gaudry É, Ledieu J, Fournée V. The role of three-dimensional bulk clusters in determining surface morphologies of intermetallic compounds: Quasicrystals to clathrates. J Chem Phys 2021; 154:124706. [PMID: 33810694 DOI: 10.1063/5.0038103] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Nanostructured alloy surfaces present unique physical properties and chemical reactivities that are quite different from those of the close-packed low-index surfaces. This can be beneficial for the design of new catalysts and electronic and data-storage devices. However, the growth of such surface nanostructures is not straightforward at the atomic scale. The cluster-based bulk structure of intermetallic compounds presents an original alternative to build surfaces with specific morphologies, in comparison to more traditional methods based on mechanical, chemical, or plasma treatments. It relies on their specific electronic structures-built from a network of bonds with a combination of ionic, covalent-like, and metallic characters, and also depends on the experimental conditions. In this paper, a few surface structures of cluster-based intermetallics are reviewed, with a special emphasis on quasicrystals and clathrates. We show how the intrinsic electronic properties of such compounds, as well as the surface preparation conditions, impact their surface morphologies, which can further influence the growth of atomic and molecular thin films at their surface.
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Affiliation(s)
- É Gaudry
- University of Lorraine, CNRS, IJL, F-54000 Nancy, France
| | - J Ledieu
- University of Lorraine, CNRS, IJL, F-54000 Nancy, France
| | - V Fournée
- University of Lorraine, CNRS, IJL, F-54000 Nancy, France
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3
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Lee SJ, Won J, Wang LL, Jing D, Harmer CP, Mark J, Akopov G, Kovnir K. New Noncentrosymmetric Tetrel Pnictides Composed of Square-Planar Gold(I) with Peculiar Bonding. Chemistry 2021; 27:7383-7390. [PMID: 33523500 PMCID: PMC8251799 DOI: 10.1002/chem.202005312] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Indexed: 11/18/2022]
Abstract
Three novel isostructural equiatomic gold tetrel pnictides, AuSiAs, AuGeP, and AuGeAs, were synthesized and characterized. These phases crystallize in the noncentrosymmetric (NCS) monoclinic space group Cc (no. 9), featuring square‐planar Au within cis‐[AuTt2Pn2] units (Tt=tetrel, Si, Ge; Pn=pnictogen, P, As). This is in drastic contrast to the structure of previously reported AuSiP, which exhibits typical linear coordination of Au with Si and P. Chemical bonding analysis through the electron localization function suggests covalent two‐center two‐electron Tt−Pn bonds, and three‐center Au−Tt−Au and Au−Pn−Au bonds with 1.6 e− per bond. X‐ray photoelectron spectroscopy studies support the covalent and nonionic nature of Au−Pn and Au−Tt bonds. The title materials were found to be n‐type narrow‐gap semiconductors or semimetals, with nearly temperature‐independent electrical resistivities and low thermal conductivities. A combination of the semimetallic properties with tunable NCS structure provides opportunities for the development of materials based on gold tetrel pnictides.
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Affiliation(s)
- Shannon J Lee
- Department of Chemistry, Iowa State University, Ames, IA, 50011, USA.,U.S. Department of Energy, Ames Laboratory, Ames, IA, 50011, USA
| | - Juyeon Won
- Department of Chemistry, Iowa State University, Ames, IA, 50011, USA.,U.S. Department of Energy, Ames Laboratory, Ames, IA, 50011, USA
| | - Lin-Lin Wang
- U.S. Department of Energy, Ames Laboratory, Ames, IA, 50011, USA
| | - Dapeng Jing
- U.S. Department of Energy, Ames Laboratory, Ames, IA, 50011, USA.,Materials Analysis and Research Laboratory, Iowa State University, Ames, IA, 50011, USA
| | - Colin P Harmer
- Department of Chemistry, Iowa State University, Ames, IA, 50011, USA.,U.S. Department of Energy, Ames Laboratory, Ames, IA, 50011, USA
| | - Justin Mark
- Department of Chemistry, Iowa State University, Ames, IA, 50011, USA.,U.S. Department of Energy, Ames Laboratory, Ames, IA, 50011, USA
| | - Georgiy Akopov
- Department of Chemistry, Iowa State University, Ames, IA, 50011, USA.,U.S. Department of Energy, Ames Laboratory, Ames, IA, 50011, USA
| | - Kirill Kovnir
- Department of Chemistry, Iowa State University, Ames, IA, 50011, USA.,U.S. Department of Energy, Ames Laboratory, Ames, IA, 50011, USA
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4
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Michiue Y, Son HW, Mori T. Utilizing a unified structure model in (3 + 1)-dimensional superspace to identify a homologous phase (Ga1−αAlα)2O3(ZnO)
m
in ZnO-based thermoelectric composites. J Appl Crystallogr 2020. [DOI: 10.1107/s1600576720013898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
A unified structure model in (3 + 1)-dimensional superspace proved suitable for identification of a homologous phase (Ga1−αAlα)2O3(ZnO)
m
by the profile fitting of powder X-ray diffraction intensities for thermoelectric composite materials in the pseudoternary system ZnO–Al2O3–Ga2O3. A homologous compound of the phase parameter m ≃ 37 was found to coexist with (Al,Ga)-doped ZnO in samples sintered at 1723 K in air. The thermoelectric properties of the composite materials were closely related to the phase fractions. The higher the phase fraction of (Al,Ga)-doped ZnO with the wurtzite structure, the higher the electrical conductivity. On the other hand, the homologous compound with the long-period structure was effective in lowering the thermal conductivity of the materials.
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5
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Owens-Baird B, Wang J, Wang SG, Chen YS, Lee S, Donadio D, Kovnir K. III-V Clathrate Semiconductors with Outstanding Hole Mobility: Cs 8In 27Sb 19 and A8Ga 27Sb 19 ( A = Cs, Rb). J Am Chem Soc 2020; 142:2031-2041. [PMID: 31894979 DOI: 10.1021/jacs.9b12351] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Three novel unconventional clathrates with unprecedented III-V semiconducting frameworks have been synthesized: Cs8In27Sb19, Cs8Ga27Sb19, and Rb8Ga27Sb19. These clathrates represent the first examples of tetrel-free clathrates that are completely composed of main group elements. All title compounds crystallize in an ordered superstructure of clathrate-I in the Ia3̅ space group (No. 206; Z = 8). In the clathrate framework, a full ordering of {Ga or In} and Sb is observed by a combination of high-resolution synchrotron single-crystal and powder X-ray diffraction techniques. Density functional theory (DFT) calculations show that all three clathrates are energetically stable with relaxed lattice constants matching the experimental data. Due to the complexity of the crystal structure composed of heavy elements, the reported clathrates exhibit ultralow thermal conductivities of less than 1 W·m-1·K-1 at room temperature. All compounds are predicted and experimentally confirmed to be narrow-bandgap p-type semiconductors with high Seebeck thermopower values, up to 250 μV·K-1 at 300 K for Cs8In27Sb19. The latter compound shows carrier concentrations and mobilities, 1.42 × 1015 cm-3 and 880 cm2 ·V-1·s-1, which are on par with the values for parent binary InSb, one of the best electronic semiconductors. The high hole carrier mobility is uncommon for complex bulk materials and a highly desirable trait, opening ways to design semiconducting materials based on tunable III-V clathrates.
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Affiliation(s)
- Bryan Owens-Baird
- Department of Chemistry , Iowa State University , Ames , Iowa 50011 , United States.,Ames Laboratory , U.S. Department of Energy , Ames , Iowa 50011 , United States
| | - Jian Wang
- Department of Chemistry , Iowa State University , Ames , Iowa 50011 , United States.,Ames Laboratory , U.S. Department of Energy , Ames , Iowa 50011 , United States.,Department of Chemistry , Wichita State University , Wichita , Kansas 67260 , United States
| | - Suyin Grass Wang
- NSF's ChemMatCARS, Center for Advanced Radiation Sources, Argonne National Laboratory , The University of Chicago , Lemont , Illinois 60439 , United States
| | - Yu-Sheng Chen
- NSF's ChemMatCARS, Center for Advanced Radiation Sources, Argonne National Laboratory , The University of Chicago , Lemont , Illinois 60439 , United States
| | - Shannon Lee
- Department of Chemistry , Iowa State University , Ames , Iowa 50011 , United States.,Ames Laboratory , U.S. Department of Energy , Ames , Iowa 50011 , United States
| | - Davide Donadio
- Department of Chemistry , University of California, Davis , Davis , California 95616 , United States
| | - Kirill Kovnir
- Department of Chemistry , Iowa State University , Ames , Iowa 50011 , United States.,Ames Laboratory , U.S. Department of Energy , Ames , Iowa 50011 , United States
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6
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Mark J, Wang J, Wu K, Lo JG, Lee S, Kovnir K. Ba 2Si 3P 6: 1D Nonlinear Optical Material with Thermal Barrier Chains. J Am Chem Soc 2019; 141:11976-11983. [PMID: 31276390 DOI: 10.1021/jacs.9b04653] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A novel barium silicon phosphide was synthesized and characterized. Ba2Si3P6 crystallizes in the noncentrosymmetric space group Pna21 (No. 33) and exhibits a unique bonding connectivity in the Si-P polyanion not found in other compounds. The crystal structure is composed of SiP4 tetrahedra connected into one-dimensional double-tetrahedra chains through corner sharing, edge sharing, and covalent P-P bonds. Chains are surrounded by Ba cations to achieve an electron balance. The novel compound exhibits semiconducting properties with a calculated bandgap of 1.6 eV and experimental optical bandgap of 1.88 eV. The complex pseudo-one-dimensional structure manifests itself in the transport and optical properties of Ba2Si3P6, demonstrating ultralow thermal conductivity (0.56 W m-1 K-1 at 300 K), promising second harmonic generation signal (0.9 × AgGaS2), as well as high laser damage threshold (1.6 × AgGaS2, 48.5 MW/cm2) when compared to the benchmark material AgGaS2. Differential scanning calorimetry reveals that Ba2Si3P6 melts congruently at 1373 K, suggesting that large single crystal growth may be possible.
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Affiliation(s)
- Justin Mark
- Department of Chemistry , Iowa State University , Ames , Iowa 50011 , United States.,Ames Laboratory, U.S. Department of Energy , Ames , Iowa 50011 , United States
| | - Jian Wang
- Department of Chemistry , Iowa State University , Ames , Iowa 50011 , United States.,Ames Laboratory, U.S. Department of Energy , Ames , Iowa 50011 , United States
| | - Kui Wu
- College of Chemistry and Environmental Science , Hebei University, Key Laboratory of Analytical Science and Technology of Hebei Province , Baoding 0710002 , China
| | - Jeane Gladys Lo
- Department of Chemistry , University of California, Davis , Davis , California 95616 , United States
| | - Shannon Lee
- Department of Chemistry , Iowa State University , Ames , Iowa 50011 , United States.,Ames Laboratory, U.S. Department of Energy , Ames , Iowa 50011 , United States
| | - Kirill Kovnir
- Department of Chemistry , Iowa State University , Ames , Iowa 50011 , United States.,Ames Laboratory, U.S. Department of Energy , Ames , Iowa 50011 , United States
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7
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Eu2P7X and Ba2As7X (X = Br, I): Chiral double-Zintl salts containing heptapnictotricyclane clusters. J SOLID STATE CHEM 2018. [DOI: 10.1016/j.jssc.2018.04.026] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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8
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Wang J, Dolyniuk JA, Kovnir K. Unconventional Clathrates with Transition Metal-Phosphorus Frameworks. Acc Chem Res 2018; 51:31-39. [PMID: 29256588 DOI: 10.1021/acs.accounts.7b00469] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
In this Account, we focused on a unique class of inclusion compounds, intermetallic clathrates, which exist in a variety of structures and exhibit diverse physical properties. These compounds combine covalent tetrahedral frameworks with rattling guest atoms situated inside their framework cages. Tetrels, the group 14 elements, are the basis for conventional clathrates because they fulfill the bonding requirement of four electrons per framework atom. In analogy to the replacement of Ge with GaAs in semiconductors, we focused on unconventional tetrel-free clathrates with frameworks composed of phosphorus and late transition metals. Compared to tetrels, these elements exhibit greater flexibility in their local coordinations and bonding. Tetrel elements cannot tolerate high deviations from regular tetrahedral coordinations. Thus, they exile a number of theoretically predicted framework topologies that are composed of a single type of polyhedral cage with square faces, such as the truncated octahedron. Unconventional clathrates are capable of stabilizing both envisaged and unique, unforeseen topologies. Clathrate structures with guest atoms held inside their cages by weak electrostatic interactions are predicted to be efficient thermoelectrics due to their low thermal conductivities. Unconventional clathrates may exhibit ultralow thermal conductivities, below 1 W m-1 K-1, without a need for heavy elements in their frameworks. The different chemical natures of transition metals and phosphorus led to their segregation over different framework positions, fulfilling the elements' specific local coordination and bonding requirements. This resulted in the formation of short- and long-range ordered superstructures with complex phonon dispersions and ultralow thermal conductivities. Aliovalent substitutions are commonly used to tune charge carrier concentrations in materials science. They are often performed under the "doping" assumption that substitutions with neighboring elements in the periodic system should not affect the parent structure but only adjust the charge carrier concentrations. This is not the case for unconventional clathrates. We investigated the tunability of the prototype Ba8Cu16P30 clathrate by the aliovalent substitution of Cu with either Zn or Ge. These substitutions resulted in significant alterations of the local chemical bonding and led to the rearrangement of the whole crystal structure. Remarkable thermoelectric properties were achieved for the substituted unconventional clathrates, exhibiting an overall order of magnitude increase in the thermoelectric performance. Aliovalent substitution allowed us to vary the charge carrier concentration in one structure type within the limits of the structure's stability. Exceeding these limits in the Ba-Cu-Zn-P system resulted in a transition from the covalent 2c-2e bonding found in conventional clathrates to the multicenter bonding common for metal-rich intermetallic compounds. This caused the complete rearrangement of the crystal structure into a new unique clathrate where a majority of the framework atoms are five- and six-coordinated, and all metal atoms are joined in Cu-Zn dumbbells. Our work shows that unconventional clathrates exhibit diverse crystal structures and unique chemical bonding, which result in tunable transport properties. While they are similar to their tetrel counterparts in some ways, they are very different in others. Specifically, the high thermal and chemical stabilities and low thermal conductivities of unconventional clathrates make them promising bases for further development of thermoelectric materials.
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Affiliation(s)
- Jian Wang
- Department
of Chemistry, Iowa State University, Ames, Iowa 50011, United States
- Ames
Laboratory, U.S. Department of Energy, Ames, Iowa 50011, United States
| | - Juli-Anna Dolyniuk
- Department
of Chemistry, University of California, Davis, California 95616, United States
| | - Kirill Kovnir
- Department
of Chemistry, Iowa State University, Ames, Iowa 50011, United States
- Ames
Laboratory, U.S. Department of Energy, Ames, Iowa 50011, United States
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9
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Novikov VV, Pilipenko KS, Matovnikov AV, Mitroshenkov NV, Kornev BI, Likhanov MS, Tyablikov AS, Shevelkov AV. Dynamics of the crystal structure of tin-based type-I clathrates with different degrees of disorder in their cationic frameworks. Phys Chem Chem Phys 2017; 19:27725-27730. [PMID: 28984324 DOI: 10.1039/c7cp05023b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The temperature dependencies of heat capacity, CP(T), and cubic unit cell parameter, a(T), were experimentally obtained in the range of 2-300 K for the compounds Sn24P19.2I8, Sn20Zn4P20.8I8, and Sn17Zn7P22I8, which belong to a family of type-I clathrates. The experimental data were analyzed in the frames of the Debye-Einstein approximation, further accounting for the contributions of positional disorder in the clathrate frameworks as well as those of defect modes arising from the distribution of guest atoms over unequal in energy but close in space positions inside the framework cages. By fitting the experimental data, the Debye and Einstein characteristic temperatures describing the dynamics of the framework and guest atoms, respectively, were obtained. Their analysis revealed peculiar dependencies of the characteristic temperatures upon the number of substituted zinc atoms and the concentration of vacancies in the framework, which are discussed in this paper.
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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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10
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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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11
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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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12
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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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13
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Yashina LV, Volykhov AA, Neudachina VS, Aleksandrova NV, Reshetova LN, Tamm ME, Pérez-Dieste V, Escudero C, Vyalikh DV, Shevelkov AV. Experimental and Computational Insight into the Chemical Bonding and Electronic Structure of Clathrate Compounds in the Sn-In-As-I System. Inorg Chem 2015; 54:11542-9. [PMID: 26574775 DOI: 10.1021/acs.inorgchem.5b02223] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Inorganic clathrate materials are of great fundamental interest and potential practical use for application as thermoelectric materials in freon-free refrigerators, waste-heat converters, direct solar thermal energy converters, and many others. Experimental studies of their electronic structure and bonding have been, however, strongly restricted by (i) the crystal size and (ii) essential difficulties linked with the clean surface preparation. Overcoming these handicaps, we present for the first time a comprehensive picture of the electronic band structure and the chemical bonding for the Sn(24-x-δ)InxAs(22-y)I8 clathrates obtained by means of photoelectron spectroscopy and complementary quantum modeling.
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Affiliation(s)
- Lada V Yashina
- Department of Chemistry, Lomonosov Moscow State University , Leninskie gory, 119991 Moscow, Russia.,Federal State Research and Design Institute of Rare Metal Industry "GIREDMET" , B. Tolmachevsky lane 5, 119017 Moscow, Russia
| | - Andrey A Volykhov
- Department of Chemistry, Lomonosov Moscow State University , Leninskie gory, 119991 Moscow, Russia.,Federal State Research and Design Institute of Rare Metal Industry "GIREDMET" , B. Tolmachevsky lane 5, 119017 Moscow, Russia.,Kurnakov Institute of General and Inorganic Chemistry RAS , Leninsky Av 31, 119991 Moscow, Russia
| | - Vera S Neudachina
- Department of Chemistry, Lomonosov Moscow State University , Leninskie gory, 119991 Moscow, Russia.,Federal State Research and Design Institute of Rare Metal Industry "GIREDMET" , B. Tolmachevsky lane 5, 119017 Moscow, Russia
| | - Nadezhda V Aleksandrova
- Department of Chemistry, Lomonosov Moscow State University , Leninskie gory, 119991 Moscow, Russia
| | - Liudmila N Reshetova
- Department of Chemistry, Lomonosov Moscow State University , Leninskie gory, 119991 Moscow, Russia
| | - Marina E Tamm
- Department of Chemistry, Lomonosov Moscow State University , Leninskie gory, 119991 Moscow, Russia
| | - Virginia Pérez-Dieste
- ALBA Synchrotron Light Source , Carretera BP 1413 Km. 3.3, 08290 Cerdanyola del Vallés, Barcelona, Spain
| | - Carlos Escudero
- ALBA Synchrotron Light Source , Carretera BP 1413 Km. 3.3, 08290 Cerdanyola del Vallés, Barcelona, Spain
| | - Denis V Vyalikh
- Institute of Solid State Physics, Dresden University of Technology , Zellescher Weg 16, D-01062 Dresden, Germany.,St. Petersburg State University , Ulyanovskaya street 1, St. Petersburg 198504, Russia
| | - Andrei V Shevelkov
- Department of Chemistry, Lomonosov Moscow State University , Leninskie gory, 119991 Moscow, Russia
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14
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Charkin DO, Demchyna R, Prots Y, Borrmann H, Burkhardt U, Schwarz U, Schnelle W, Plokhikh IV, Kazakov SM, Abakumov AM, Batuk D, Verchenko VY, Tsirlin AA, Curfs C, Grin Y, Shevelkov AV. Two New Arsenides, Eu7Cu44As23 and Sr7Cu44As23, With a New Filled Variety of the BaHg11 Structure. Inorg Chem 2014; 53:11173-84. [PMID: 25265469 DOI: 10.1021/ic5017615] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Dmitri O. Charkin
- Department
of Chemistry, Lomonosov Moscow State University, Moscow, Russia
| | - Roman Demchyna
- National University of Forestry and Wood Technology of Ukraine, Lviv, Ukraine
- Max-Planck-Institut für Chemische Physik fester Stoffe, Dresden, Germany
| | - Yurii Prots
- Max-Planck-Institut für Chemische Physik fester Stoffe, Dresden, Germany
| | - Horst Borrmann
- Max-Planck-Institut für Chemische Physik fester Stoffe, Dresden, Germany
| | - Ulrich Burkhardt
- Max-Planck-Institut für Chemische Physik fester Stoffe, Dresden, Germany
| | - Ulrich Schwarz
- Max-Planck-Institut für Chemische Physik fester Stoffe, Dresden, Germany
| | - Walter Schnelle
- Max-Planck-Institut für Chemische Physik fester Stoffe, Dresden, Germany
| | - Igor V. Plokhikh
- Department
of Chemistry, Lomonosov Moscow State University, Moscow, Russia
| | - Sergey M. Kazakov
- Department
of Chemistry, Lomonosov Moscow State University, Moscow, Russia
| | - Artem M. Abakumov
- Department
of Chemistry, Lomonosov Moscow State University, Moscow, Russia
- EMAT, University of Antwerp, Antwerp, Belgium
| | | | - Valery Yu. Verchenko
- Department
of Chemistry, Lomonosov Moscow State University, Moscow, Russia
- National Institute of Chemical Physics and Biophysics, Tallinn, Estonia
| | | | - Caroline Curfs
- European Synchrotron Radiation Facility, Grenoble, France
| | - Yuri Grin
- Max-Planck-Institut für Chemische Physik fester Stoffe, Dresden, Germany
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Verchenko VY, Vasiliev AS, Tsirlin AA, Kulbachinskii VA, Kytin VG, Shevelkov AV. Synthesis and thermoelectric properties of Re3As6.6In0.4 with Ir3Ge7 crystal structure. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2013; 4:446-452. [PMID: 23946913 PMCID: PMC3740774 DOI: 10.3762/bjnano.4.52] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/15/2013] [Accepted: 06/12/2013] [Indexed: 06/02/2023]
Abstract
The Re3As7- x In x solid solution was prepared for x ≤ 0.5 by heating the elements in stoichiometric ratios in evacuated silica tubes at 1073 K. It crystallizes with the Ir3Ge7 crystal structure, space group Im-3m, with a unit-cell parameter a ranging from 8.716 to 8.747 Å. The crystal structure and properties were investigated for a composition with x = 0.4. It is shown that indium substitutes arsenic exclusively at one crystallographic site, such that the As-As dumbbells with d As-As = 2.54 Å remain intact. Re3As6.6In0.4 behaves as a bad metal or heavily doped semiconductor, with electrons being the dominant charge carriers. It possesses high values of Seebeck coefficient and low thermal conductivity, but relatively low electrical conductivity, which leads to rather low values of the thermoelectric figure of merit.
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Affiliation(s)
- Valeriy Y Verchenko
- Department of Chemistry, Lomonosov Moscow State University, Moscow 119991, Russia
| | - Anton S Vasiliev
- Department of Chemistry, Lomonosov Moscow State University, Moscow 119991, Russia
| | - Alexander A Tsirlin
- National Institute of Chemical Physics and Biophysics, 12618 Tallinn, Estonia
| | | | - Vladimir G Kytin
- Faculty of Physics, Lomonosov Moscow State University, Moscow 119991, Russia
| | - Andrei V Shevelkov
- Department of Chemistry, Lomonosov Moscow State University, Moscow 119991, Russia
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16
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Kirsanova MA, Mori T, Maruyama S, Abakumov AM, Tendeloo GV, Olenev A, Shevelkov AV. Cationic Clathrate of Type-III Ge172–xPxTey (y ≈ 21.5, x ≈ 2y): Synthesis, Crystal Structure and Thermoelectric Properties. Inorg Chem 2013; 52:8272-9. [DOI: 10.1021/ic401203r] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Maria A. Kirsanova
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory 1-3, Moscow 119991, 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
| | - Artem M. Abakumov
- EMAT, University of Antwerp, Groenenborgerlaan
171, B-2020, Antwerp, Belgium
| | | | - Andrei Olenev
- “SineTheta” Ltd., scientific
park of Lomonosov Moscow State University, Leninskie Gory, 1-77, Moscow
119991, Russia
| | - Andrei V. Shevelkov
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory 1-3, Moscow 119991, Russia
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17
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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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18
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Arafa IM, El-Ghanem HM, Ahmad AL. Photoconductivity and photovoltaic properties of polyaniline immobilized onto metallurgical porous silicon powder. POLYM INT 2012. [DOI: 10.1002/pi.4418] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Isam M Arafa
- Department of Applied Chemistry, Faculty of Science; Jordan University of Science and Technology; PO Box 3030 Irbid 22110 Jordan
| | - Hassan M El-Ghanem
- Department of Applied Physics; Jordan University of Science and Technology; Irbid Jordan
| | - Ahmad Lafi Ahmad
- Knowledge Department; Royal Scientific Society; PO Box 1438 Amman 11941 Jordan
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Abramchuk NS, Carrillo-Cabrera W, Veremchuk I, Oeschler N, Olenev AV, Prots Y, Burkhardt U, Dikarev EV, Grin J, Shevelkov AV. Homo- and heterovalent substitutions in the new clathrates I Si30P16Te(8-x)Se(x) and Si(30+x)P(16-x)Te(8-x)Br(x): synthesis, crystal structure, and thermoelectric properties. Inorg Chem 2012; 51:11396-405. [PMID: 23072375 DOI: 10.1021/ic3010097] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The new cationic clathrates I Si(30)P(16)Te(8-x)Se(x) and Si(30+x)P(16-x)Te(8-x)Br(x) were synthesized by the standard ampule technique. The Si(30)P(16)Te(8-x)Se(x) (x = 0-2.3) clathrates crystallize in the cubic space group Pm3̅n with the unit cell parameter a ranging from 9.9382(2) to 9.9696(1) Å. In the case of the Si(30+x)P(16-x)Te(8-x)Br(x) (x = 1-6.4) clathrates, the lattice parameter varies from 9.9720(8) to 10.0405(1) Å; at lower Si/P ratios (x = 1-3) the ordering of bromine atoms induces the splitting of the guest positions and causes the transformation from the space group Pm3n to Pm3. Irrespective of the structure peculiarities, the normal temperature motion of the guest atoms inside the oversized cages of the framework is observed. The title clathrates possess very low thermal expansion coefficients ranging from 6.6 × 10(-6) to 1.0 × 10(-5) K(-1) in the temperature range of 298-1100 K. The characteristic Debye temperature is about 490 K. Measurements of the electrical resistivity and thermopower showed typical behavior of p-type thermally activated semiconductors, whereas the temperature behavior of the thermal conductivity is glasslike and in general consistent with the PGEC concept. The highest value of the thermoelectric figure of merit (ZT = 0.1) was achieved for the Br-bearing clathrate Si(32.1(2))P(13.9(2))Te(6.6(2))Br(1.0(1)) at 750 K.
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Affiliation(s)
- Nikolay S Abramchuk
- Max-Planck-Institute für Chemische Physik fester Stoffe, Noethnitzer Str. 40, 01187 Dresden, Germany.
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Reshetova LN, Shevelkov AV. Synthesis and clathrate-type crystal structure of a solid solution in the Sn-In-P-Br system. Russ Chem Bull 2012. [DOI: 10.1007/s11172-012-0004-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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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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Kirsanova MA, Reshetova LN, Olenev AV, Abakumov AM, Shevelkov AV. Semiclathrates of the Ge-P-Te System: Synthesis and Crystal Structures. Chemistry 2011; 17:5719-26. [DOI: 10.1002/chem.201003553] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2010] [Revised: 02/01/2011] [Indexed: 11/08/2022]
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Kirsanova MA, Olenev AV, Abakumov AM, Bykov MA, Shevelkov AV. Extension of the Clathrate Family: The Type X Clathrate Ge79P29S18Te6. Angew Chem Int Ed Engl 2011; 50:2371-4. [DOI: 10.1002/anie.201007483] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2010] [Indexed: 11/09/2022]
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Kirsanova MA, Olenev AV, Abakumov AM, Bykov MA, Shevelkov AV. Extension of the Clathrate Family: The Type X Clathrate Ge79P29S18Te6. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201007483] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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25
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Michiue Y, Mori T, Prytuliak A, Matsushita Y, Tanaka M, Kimizuka N. Electrical, optical, and thermoelectric properties of Ga2O3(ZnO)9. RSC Adv 2011. [DOI: 10.1039/c1ra00315a] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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