Model of colossal magnetostriction in the martensite phase of Ni-Mn-Ga alloys

V. D. Buchel'nikov, V. S. Romanov, A. N. Vasil'ev B, T. Takagi, V. G. Shavrov

研究成果: Article査読

7 被引用数 (Scopus)

抄録

A model is proposed for describing the experimentally observed martensite and magnetic domain structures in Heusler ferromagnetic alloys Ni2+1Mn1-xGa. On the basis of this model, the field dependences of magnetization and deformation of the alloys are calculated numerically and an expression for the maximum attainable strains induced by external magnetic fields in these alloys is derived. It is shown that for small values of the effective elastic modulus and demagnetizing factor of alloys, the strains induced by the magnetic field may attain maximum possible values of approximately 5%, which are determined by lattice distortions as a result of the martensite transition in fields of about 1 kOe.

本文言語English
ページ(範囲)1302-1306
ページ数5
ジャーナルJournal of Experimental and Theoretical Physics
93
6
DOI
出版ステータスPublished - 2001
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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