SOFT MODES IN NI2MNGA SINGLE-CRYSTALS

被引：59

作者：

FRITSCH, G

KOKORIN, VV

KEMPF, A

机构：

[1] Math. Inst., Munchen Univ.

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 1994年 / 6卷 / 08期

关键词：

D O I：

10.1088/0953-8984/6/8/002

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We report on measurements of the thermal diffuse x-ray intensity from a single crystal of Ni2MnGa in the temperature range 180 to 250 K. The martensitic phase transition is clearly to be seen. It is accompanied by a strong soft-mode behaviour in the transverse acoustic phonon branch with q along the [110] direction and polarization along [110BAR] in the high-temperature phase. A peak splitting and a super-structure characterize the low-temperature martensitic phase.

引用

页码：L107 / L110

页数：4

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