MODULATED LATTICE-RELAXATION IN BETA-BASED PREMARTENSITIC PHASE

被引：30

作者：

YAMADA, Y

NODA, Y

TAKIMOTO, M

机构：

[1] Osaka Univ, Faculty of Engineering, Science, Toyonaka, Jpn, Osaka Univ, Faculty of Engineering Science, Toyonaka, Jpn

来源：

SOLID STATE COMMUNICATIONS | 1985年 / 55卷 / 11期

关键词：

D O I：

10.1016/0038-1098(85)90576-9

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Recent X-ray studies on TiNi(Fe) alloy by Shapiro et al. show that incommensurability of satellite reflections changes from Brillouin zone to Brillouin zone, giving overall 'swirl' like shift pattern in the reciprocal space which precludes any simple incommensurate wave model. We have succeeded to reproduce the shift pattern observed, based on two simple assumptions: (i) existence of soft phonons at q equals 1/3 left bracket 110 right bracket (ii) existence of 'embryos' of low temperature martensite phase. The proposed features of premartensitic phase suggest a possible microscopic mechanism of martensite transformation in general as well as of omega -phase formation.

引用

页码：1003 / 1006

页数：4

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