SOFT MODES IN NI2MNGA SINGLE-CRYSTALS

被引:56
作者
FRITSCH, G
KOKORIN, VV
KEMPF, A
机构
[1] Math. Inst., Munchen Univ.
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
收藏
页码:L107 / L110
页数:4
相关论文
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