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

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

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)

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 languageEnglish
Pages (from-to)384-390
Number of pages7
JournalJournal of Solid State Chemistry
Volume88
Issue number2
DOIs
Publication statusPublished - 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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