Kinetics of cubic to tetragonal transformation under external field by the time-dependent Ginzburg-Landau approach

Katsushi Tanaka, Masahiro Koiwa, Yoshihiro Yamazaki, Tetsu Ichitsubo

研究成果: Article査読

60 被引用数 (Scopus)

抄録

Computer simulations based on the time-dependent Ginzburg-Landau approach have been performed for the formation of domain structure in the cubic-tetragonal transformation under an external field. The fcc-L10 ordering has been studied as a model case of the transformation, and the Landau free-energy function has been determined so as to reproduce the free energy calculated by the Monte Carlo simulation. The simulations have demonstrated the features observed in our experiments on FePd alloy under an external stress, and have clarified the formation mechanism of a single variant structure. The internal stress field developed by the preferential formation of a variant favored by the external stress further accelerates the trend cooperatively, and eventually leads to a single variant structure.

本文言語English
ページ(範囲)5435-5441
ページ数7
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
62
9
DOI
出版ステータスPublished - 2000 9月 1
外部発表はい

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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