Structural and magnetic phase transitions in shape memory ni-mn-ga alloys

V. D. Buhel'nikov, A. T. Zayak, A. N. Vasil'ev, T. Takagi, P. Entel', V. G. Shavrov

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Influence of the magnetoelastic interaction on the structural phase transitions in cubic ferromagnets is investigated on the basis of a Ginzburg-Landau theory. It is shown that, for the case of a positive magnetic anisotropy constant, the structural phase transitions are not accompanied by a spin reorientation. In the magnetic state, the high-temperature phase has small deformations caused by magnetostriction. For the case of a strong magnetoelastic coupling, these deformations lead to vanishing of the first-order structural transitions. Corresponding critical points are determined. Due to the magnetoelastic interaction, the first-order magnetic phase transition can occur simultaneously with the first-order structural transformation.

Original languageEnglish
Pages (from-to)S69-S73
JournalPhysics of Metals and Metallography
Volume93
Issue numberSUPPL. 1
Publication statusPublished - 2002
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Materials Chemistry

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