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Matsumoto Y, Nambu Y, Honda T, Ikeda K, Otomo T, Kageyama H. High-pressure Synthesis of Ba 2CoO 2Ag 2Te 2 with Extended CoO 2 Planes. Inorg Chem 2020; 59:8121-8126. [PMID: 32437136 DOI: 10.1021/acs.inorgchem.0c00429] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Using a high-pressure synthesis method, we prepared the layered oxychalcogenide Ba2CoO2Ag2Te2 (space group: I4/mmm) with alternating stacks of CoO2 and Ag2Te2 layers, separated by Ba atoms. The CoO2 plane is greatly extended (Co-O = 2.19 Å on average) due to tensile strain from adjacent Ag2Te2 layers, causing displacement of oxide anions. Layered cobaltates with trans-CoO4X2 (X = chalcogen, halogen) coordination feature large spin-orbit coupling, which is linearly scaled by the tetrahedral factor of dCo-X/dCo-O. However, applying this relation to Ba2CoO2Ag2Te2 yields a magnetic moment of ∼4 μB, which is nearly twice the experimentally observed value of 1.87(17) μB. This result, along with a reduced Néel temperature (TN = 60 K), originates from the off-centered position of otherwise under-bonded oxide anions, which changes the crystal field splitting of Co d orbitals.
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Affiliation(s)
- Yuki Matsumoto
- Department of Energy and Hydrocarbon Chemistry, Graduate school of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Yusuke Nambu
- Institute for Materials Research, Tohoku University, Sendai 980-8577, Miyagi, Japan
| | - Takashi Honda
- Institute of Materials Structure Science, High Energy Accelerator Research Research Organization (KEK), Tsukuba 305-0801, Ibaraki, Japan
| | - Kazutaka Ikeda
- Institute of Materials Structure Science, High Energy Accelerator Research Research Organization (KEK), Tsukuba 305-0801, Ibaraki, Japan
| | - Toshiya Otomo
- Institute of Materials Structure Science, High Energy Accelerator Research Research Organization (KEK), Tsukuba 305-0801, Ibaraki, Japan
| | - Hiroshi Kageyama
- Department of Energy and Hydrocarbon Chemistry, Graduate school of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
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Zheng YJ, Shi YF, Tian CB, Lin H, Wu LM, Wu XT, Zhu QL. An unprecedented pentanary chalcohalide with Mn atoms in two chemical environments: unique bonding characteristics and magnetic properties. Chem Commun (Camb) 2019; 55:79-82. [DOI: 10.1039/c8cc08380k] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An unprecedented 2D layered pentanary chalcohalide Cs2[Mn2Ga3S7Cl] features distinguishing structure characteristics with the coexistence of two Mn-coordinated polyhedra and shows interesting ferrimagnetic behaviour.
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Affiliation(s)
- Yu-Jun Zheng
- State Key Laboratory of Structural Chemistry
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
- P. R. China
| | - Yong-Fang Shi
- State Key Laboratory of Structural Chemistry
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
- P. R. China
| | - Chong-Bin Tian
- State Key Laboratory of Structural Chemistry
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
- P. R. China
| | - Hua Lin
- State Key Laboratory of Structural Chemistry
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
- P. R. China
| | - Li-Ming Wu
- Key Laboratory of Theoretical and Computational Photochemistry
- Ministry of Education
- College of Chemistry
- Beijing Normal University
- Beijing 100875
| | - Xin-Tao Wu
- State Key Laboratory of Structural Chemistry
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
- P. R. China
| | - Qi-Long Zhu
- State Key Laboratory of Structural Chemistry
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
- P. R. China
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Li BZ, Wang ZC, Wang JL, Zhang FX, Wang DZ, Zhang FY, Sun YP, Jing Q, Zhang HF, Tan SG, Li YK, Feng CM, Mei YX, Wang C, Cao GH. Peculiar phase diagram with isolated superconducting regions in ThFeAsN 1-x O x. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2018; 30:255602. [PMID: 29749964 DOI: 10.1088/1361-648x/aac402] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
ThFeAsN1-x O x ([Formula: see text]) system with heavy electron doping has been studied by the measurements of x-ray diffraction, electrical resistivity, magnetic susceptibility and specific heat. The non-doped compound exhibits superconductivity at [Formula: see text] K, which is possibly due to an internal uniaxial chemical pressure that is manifested by the extremely small value of As height with respect to the Fe plane. With the oxygen substitution, the T c value decreases rapidly to below 2 K for [Formula: see text], and surprisingly, superconductivity re-appears in the range of [Formula: see text] with a maximum [Formula: see text] of 17.5 K at x = 0.3. For the normal-state resistivity, while the samples in intermediate non-superconducting interval exhibit Fermi liquid behavior, those in other regions show a non-Fermi-liquid behavior. The specific heat jump for the superconducting sample of x = 0.4 is [Formula: see text], which is discussed in terms of anisotropic superconducting gap. The peculiar phase diagram in ThFeAsN1-x O x presents additional ingredients for understanding the superconducting mechanism in iron-based superconductors.
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Affiliation(s)
- Bai-Zhuo Li
- Department of Physics, School of Physics & Optoelectronic Engineering, Shandong University of Technology, Zibo 255000, People's Republic of China
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Zaikina JV, Batuk M, Abakumov AM, Navrotsky A, Kauzlarich SM. Facile Synthesis of Ba1–xKxFe2As2 Superconductors via Hydride Route. J Am Chem Soc 2014; 136:16932-9. [DOI: 10.1021/ja509907r] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | - Maria Batuk
- EMAT, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium
| | - Artem M. Abakumov
- EMAT, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium
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Crystal, magnetic, and electronic structures, and properties of new BaMnPnF (Pn = As, Sb, Bi). Sci Rep 2013; 3:2154. [PMID: 23831607 PMCID: PMC6504822 DOI: 10.1038/srep02154] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2013] [Accepted: 06/20/2013] [Indexed: 11/08/2022] Open
Abstract
New BaMnPnF (Pn = As, Sb, Bi) are synthesized by stoichiometric reaction of elements with BaF2. They crystallize in the P4/nmm space group, with the ZrCuSiAs-type structure, as indicated by X-ray crystallography. Electrical resistivity results indicate that Pn = As, Sb, and Bi are semiconductors with band gaps of 0.73 eV, 0.48 eV and 0.003 eV (extrinsic value), respectively. Powder neutron diffraction reveals a G-type antiferromagnetic order below TN = 338(1) K for Pn = As, and below TN = 272(1) K for Pn = Sb. Magnetic susceptibility increases with temperature above 100 K for all the materials. Density functional calculations find semiconducting antiferromagnetic compounds with strong in-plane and weaker out-of-plane exchange coupling that may result in non-Curie Weiss behavior above TN. The ordered magnetic moments are 3.65(5) μB/Mn for Pn = As, and 3.66(3) μB/Mn for Pn = Sb at 4 K, as refined from neutron diffraction experiments.
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Carenco S, Portehault D, Boissière C, Mézailles N, Sanchez C. Nanoscaled Metal Borides and Phosphides: Recent Developments and Perspectives. Chem Rev 2013; 113:7981-8065. [DOI: 10.1021/cr400020d] [Citation(s) in RCA: 756] [Impact Index Per Article: 68.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Sophie Carenco
- Chimie de la Matière Condensée de Paris, UPMC Univ Paris 06, UMR 7574, Collège de France, 11 Place Marcelin Berthelot, 75231 Paris Cedex 05, France
- Chimie de la Matière Condensée de Paris, CNRS, UMR 77574, Collège de France, 11 Place Marcellin Berthelot, 75231 Paris Cedex 05, France
- Chimie de la Matière Condensée de Paris, Collège de France, 11 Place Marcellin Berthelot, 75231 Paris Cedex 05, France
- Laboratory Heteroelements and Coordination, Chemistry Department, Ecole Polytechnique, CNRS-UMR 7653, Palaiseau, France
| | - David Portehault
- Chimie de la Matière Condensée de Paris, UPMC Univ Paris 06, UMR 7574, Collège de France, 11 Place Marcelin Berthelot, 75231 Paris Cedex 05, France
- Chimie de la Matière Condensée de Paris, CNRS, UMR 77574, Collège de France, 11 Place Marcellin Berthelot, 75231 Paris Cedex 05, France
- Chimie de la Matière Condensée de Paris, Collège de France, 11 Place Marcellin Berthelot, 75231 Paris Cedex 05, France
| | - Cédric Boissière
- Chimie de la Matière Condensée de Paris, UPMC Univ Paris 06, UMR 7574, Collège de France, 11 Place Marcelin Berthelot, 75231 Paris Cedex 05, France
- Chimie de la Matière Condensée de Paris, CNRS, UMR 77574, Collège de France, 11 Place Marcellin Berthelot, 75231 Paris Cedex 05, France
- Chimie de la Matière Condensée de Paris, Collège de France, 11 Place Marcellin Berthelot, 75231 Paris Cedex 05, France
| | - Nicolas Mézailles
- Laboratory Heteroelements and Coordination, Chemistry Department, Ecole Polytechnique, CNRS-UMR 7653, Palaiseau, France
| | - Clément Sanchez
- Chimie de la Matière Condensée de Paris, UPMC Univ Paris 06, UMR 7574, Collège de France, 11 Place Marcelin Berthelot, 75231 Paris Cedex 05, France
- Chimie de la Matière Condensée de Paris, CNRS, UMR 77574, Collège de France, 11 Place Marcellin Berthelot, 75231 Paris Cedex 05, France
- Chimie de la Matière Condensée de Paris, Collège de France, 11 Place Marcellin Berthelot, 75231 Paris Cedex 05, France
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