Influence of volume magnetostriction on the T-x phase diagram of shape memory Ni2+xMn1-xGa alloys

V. D. Buchelnikov, V. V. Khovailo, A. N. Vasil'Ev, T. Takagi

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

The phase diagram of structural and magnetic phase transitions of a cubic ferromagnet in the framework of the phenomenological Ginzburg-Landau theory, taking into account the volume change at the structural and magnetic phase transitions, was theoretically investigated. It is shown that the volume magnetostriction significantly influences on the phase diagram of a cubic ferromagnet. In particular, the interval of existence of the coupled magnetic and structural phase transition depends on the value of the volume magnetostriction. This interval for shape memory Ni2+ xMn1-xGa Heusler alloys was theoretically evaluated. The theoretical results are in good agreement with the experimental ones.

Original languageEnglish
Pages (from-to)854-856
Number of pages3
JournalJournal of Magnetism and Magnetic Materials
Volume290-291 PART 2
DOIs
Publication statusPublished - 2005 Apr

Keywords

  • Ferromagnetic materials
  • Magnetostriction
  • Phase transitions - magnetic
  • Phase transitions - structural

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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