Instability of the parent phase in nearly ordered Fe3Pt invar alloys

Takashi Fukuda, Takuya Yamamoto, Masataka Yamamoto, Tomoyuki Kakeshita

研究成果: Conference contribution

抄録

The martensitic transformation in a nearly ordered Fe3Pt is weak first order, and the martensite phase shows a large magnetic field-induced strain of several percent. We have investigated the origin of this transformation from its electronic structure. A characteristic feature in the electronic structure is the existence of a relatively high peak in the density of states of the minority spin band just below the Fermi energy. This peak splits into two peaks by tetragonal distortion, and one of them shifts to lower energy by the distortion, suggesting that the band Jahn-Teller effect is the main cause for the transformation.

本文言語English
ホスト出版物のタイトルSolid-Solid Phase Transformations in Inorganic Materials
出版社Trans Tech Publications Ltd
ページ79-83
ページ数5
ISBN(印刷版)9783037851432
DOI
出版ステータスPublished - 2011
外部発表はい

出版物シリーズ

名前Solid State Phenomena
172-174
ISSN(印刷版)1012-0394

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)
  • Condensed Matter Physics

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