Magnetic-field-induced superelasticity of ferromagnetic thermoelastic martensites: Experiment and modeling

V. A. Chernenko, V. A. L'Vov, P. Müllner, G. Kostorz, T. Takagi

研究成果: Article査読

90 被引用数 (Scopus)

抄録

The superelastic effect under constant magnetic fields exhibited by the Ni-Mn-Ga ferromagnetic thermoelastic martensites with single-variant and polyvariant microstructure is studied experimentally and theoretically. The formerly proposed statistical model of the magnetostrain effect in the ferromagnetic martensite is modified for the theoretical description of the superelastic stress-strain dependence under magnetic field. The mechanical stress, which is equivalent to the internal stress induced by the magnetic field, is determined by fitting the theoretical stress-strain curves to the experimental results. A quadratic dependence of the field-induced stress on the value of the magnetization of martensite is found. This dependence supports the model assumption that a magnetoelastic interaction causes the magnetostrain effect.

本文言語English
論文番号134410
ページ(範囲)134410-1-134410-8
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
69
13
DOI
出版ステータスPublished - 2004 4

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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