Martensitic transition and structural modulations in the Heusler alloy Ni2FeGa

被引：44

作者：

Li, JQ ^{[1
]}

Liu, ZH ^{[1
]}

Yu, HC ^{[1
]}

Zhang, M ^{[1
]}

Zhou, YQ ^{[1
]}

Wu, GH ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Phys, Beijing 100080, Peoples R China

来源：

SOLID STATE COMMUNICATIONS | 2003年 / 126卷 / 06期

关键词：

magnetically ordered materials; scanning and transmission electron microscopy; phase transition;

D O I：

10.1016/S0038-1098(03)00144-3

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We have found two distinctive structural modulations altering evidently along with the martensitic transition (MT) in the Ni2FeGa alloy. The first one (q(1)), corresponding to the well-known phonon anomalies in the [xixi0] TA(2) branch, occurs along the <110> direction. The second one (q(2)), an incommensurate modulation observed for the first time, occurs along the <211>-direction. Both modulations change gradually with the premartensitic phonon softening and discontinuously with the MT. Anomalies in magnetic properties emerging around the MT have been briefly discussed. (C) 2003 Elsevier Science Ltd. All rights reserved.

引用

页码：323 / 327

页数：5

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