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  Structural, Magnetic and Thermoelectric Properties of hp-Mn3Ge5

Castillo, R., Schnelle, W., Bobnar, M., Cardoso Gil, R., Schwarz, U., & Grin, Y. (2020). Structural, Magnetic and Thermoelectric Properties of hp-Mn3Ge5. Zeitschrift für anorganische und allgemeine Chemie; Verlag Johann Ambrosius Barth / Wiley-VCH, Leipzig, Weinheim, 646, 256-262. doi:10.1002/zaac.201900342.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0005-E64C-3 Version Permalink: http://hdl.handle.net/21.11116/0000-0005-E651-C
Genre: Journal Article

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 Creators:
Castillo, Rodrigo1, Author              
Schnelle, Walter2, Author              
Bobnar, Matej1, Author              
Cardoso Gil, Raul3, Author              
Schwarz, Ulrich4, Author              
Grin, Yuri5, Author              
Affiliations:
1Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863405              
2Walter Schnelle, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863441              
3Raul Cardoso, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863420              
4Ulrich Schwarz, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863423              
5Juri Grin, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863413              

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Free keywords: Chemical bonding, Germanium, Heat capacity, Magnetic susceptibility, Manganese, Charge transfer, Chemical analysis, Crystal structure, Electronic density of states, Germanium, Germanium compounds, Magnetic susceptibility, Magnetism, Manganese, Manganese compounds, Specific heat, Thermal conductivity, Thermoelectric equipment, Thermoelectricity, Band structure calculation, Chemical bondings, Ferromagnetic transitions, High-temperature synthesis, Low thermal conductivity, Metallic conductivity, Thermoelectric figure of merit, Thermoelectric properties, Chemical bonds
 Abstract: Mn3Ge5 was obtained by high-pressure, high temperature synthesis. The compound adopts a Nowotny-Chimney-Ladder type crystal structure [tetragonal, space group P4n2, a = 5.7449(1) Å, c = 13.9096(4) Å, Z = 4]. Magnetic measurements reveal a ferromagnetic transition around 40 K and metallic conductivity in the temperature range from 3 K to 350 K. Despite a low thermal conductivity, the metallic character of the sample and the low Seebeck coefficient result in low values for the thermoelectric Figure of merit, ZT. Band-structure calculations show that the Fermi level is located slightly below a pseudo-gap in the electronic density of states. Chemical bonding analysis in position space discloses moderate charge transfer and two- as well as three-atomic directed, heteroatomic bonding involving both the manganese and the germanium atoms. © 2020 The Authors. Published by Wiley-VCH Verlag GmbH & Co. KGaA.

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Language(s): eng - English
 Dates: 2020-02-222020-02-22
 Publication Status: Published in print
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 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1002/zaac.201900342
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Title: Zeitschrift für anorganische und allgemeine Chemie; Verlag Johann Ambrosius Barth / Wiley-VCH , Leipzig, Weinheim
Source Genre: Journal
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Pages: - Volume / Issue: 646 Sequence Number: - Start / End Page: 256 - 262 Identifier: -