Effect of Si substitution on anti-invar behavior of Y6(Mn 1-xSix)23 compounds

M. Ohta, A. Fujita, K. Fukamichi, H. Kimura

Research output: Contribution to journalArticlepeer-review

Abstract

The anti-invar effect in Y6Mn1-xSix compound system has been investigated and the results are compared with those in Y6(Mn1-xMx)23 compounds (M = Al, Fe). From the relation between the Curie temperature TC and the thermal expansion coefficient α, α is larger in M = Si than in M = Fe and Al for the compounds of the same TC. The present results strongly imply that the Si substitution results in the reduction of the exchange interaction without a strong change in the intra-atomic Coulomb interaction.

Original languageEnglish
Pages (from-to)499-500
Number of pages2
JournalJournal of Magnetism and Magnetic Materials
Volume272-276
Issue numberI
DOIs
Publication statusPublished - 2004 May

Keywords

  • Anti-invar effect
  • Intra-atomic Coulomb interaction
  • Spin fluctuation
  • Thermal expansion anomaly

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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