Numerical Study of Elastic Effects by Cubic-Tetragonal Symmetry Breaking on the Ordering Kinetics

Yoshihiro Yamazaki*

*この研究の対応する著者

研究成果: Article査読

5 被引用数 (Scopus)

抄録

Elastic effects by cubic-tetragonal symmetry breaking on the ordering kinetics are investigated. We propose a coarse-grained model characterized by a Ginzburg-Landau free energy with non-conserved order parameters coupled to an elastic field. By numerical study we obtain an oval shaped domain and a square domain in two dimensions and a plate-like domain and a rod-like domain in three dimensions. And in the coarsening process, a striped pattern is obtained. These patterns are remarkably similar to morphologies observed in real cubic-tetragonal order-disorder alloys. Moreover, we study the dynamics during the coarsening process by analyzing the change of the total domain boundaries LDB(t). LDB(t) decreases as a power of time: t(α > 0). The exponent a becomes small with increasing the magnitude of the elastic effects.

本文言語English
ページ(範囲)2628-2637
ページ数10
ジャーナルjournal of the physical society of japan
66
9
DOI
出版ステータスPublished - 1997 9月
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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