High pressure synthesis and electrical and magnetic properties of MnGe4 and CoGe4

Hirotsugu Takizawa; Tsugio Sato; T. Endo; M. Shimada

doi:10.1016/0022-4596(90)90232-M

High pressure synthesis and electrical and magnetic properties of MnGe₄ and CoGe₄

Hirotsugu Takizawa, Tsugio Sato, T. Endo, M. Shimada

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Abstract

The new germanides, MnGe₄ and CoGe₄, were synthesized by solid state reactions at 5.5-6 GPa and 600-700°C for 2 hr using the belt-type high pressure apparatus. The crystal structures of MnGe₄ and CoGe₄ are superstructures of the β-NiHg₄-type structures. The unit cell of MnGe₄ is composed of four β-NiHg₄-type cells and that of CoGe₄ is composed of eight β-NiHg₄-type cells. MnGe₄ is a metallic conductor and an itinerant electron ferromagnet with a Curie temperature of 340 K. CoGe₄ is a metallic conductor and a Pauli paramagnet.

Original language	English
Pages (from-to)	384-390
Number of pages	7
Journal	Journal of Solid State Chemistry
Volume	88
Issue number	2
DOIs	https://doi.org/10.1016/0022-4596(90)90232-M
Publication status	Published - 1990 Jan 1

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Condensed Matter Physics
Physical and Theoretical Chemistry
Inorganic Chemistry
Materials Chemistry

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10.1016/0022-4596(90)90232-M

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abstract = "The new germanides, MnGe4 and CoGe4, were synthesized by solid state reactions at 5.5-6 GPa and 600-700°C for 2 hr using the belt-type high pressure apparatus. The crystal structures of MnGe4 and CoGe4 are superstructures of the β-NiHg4-type structures. The unit cell of MnGe4 is composed of four β-NiHg4-type cells and that of CoGe4 is composed of eight β-NiHg4-type cells. MnGe4 is a metallic conductor and an itinerant electron ferromagnet with a Curie temperature of 340 K. CoGe4 is a metallic conductor and a Pauli paramagnet.",

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T1 - High pressure synthesis and electrical and magnetic properties of MnGe4 and CoGe4

AU - Takizawa, Hirotsugu

AU - Sato, Tsugio

AU - Endo, T.

AU - Shimada, M.

PY - 1990/1/1

Y1 - 1990/1/1

N2 - The new germanides, MnGe4 and CoGe4, were synthesized by solid state reactions at 5.5-6 GPa and 600-700°C for 2 hr using the belt-type high pressure apparatus. The crystal structures of MnGe4 and CoGe4 are superstructures of the β-NiHg4-type structures. The unit cell of MnGe4 is composed of four β-NiHg4-type cells and that of CoGe4 is composed of eight β-NiHg4-type cells. MnGe4 is a metallic conductor and an itinerant electron ferromagnet with a Curie temperature of 340 K. CoGe4 is a metallic conductor and a Pauli paramagnet.

AB - The new germanides, MnGe4 and CoGe4, were synthesized by solid state reactions at 5.5-6 GPa and 600-700°C for 2 hr using the belt-type high pressure apparatus. The crystal structures of MnGe4 and CoGe4 are superstructures of the β-NiHg4-type structures. The unit cell of MnGe4 is composed of four β-NiHg4-type cells and that of CoGe4 is composed of eight β-NiHg4-type cells. MnGe4 is a metallic conductor and an itinerant electron ferromagnet with a Curie temperature of 340 K. CoGe4 is a metallic conductor and a Pauli paramagnet.

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High pressure synthesis and electrical and magnetic properties of MnGe₄ and CoGe₄

Abstract

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