Magnetic domain evolution with applied field in a Ni-Mn-Ga magnetic shape memory alloy

被引：47
作者：
Ge, YL [1 ]
Heczko, O [1 ]
Söderberg, O [1 ]
Hannula, SP [1 ]
机构：
[1] Helsinki Univ Technol, Mat Sci Lab, FI-02015 Helsinki, Finland
来源：
SCRIPTA MATERIALIA | 2006年 / 54卷 / 12期
关键词：
Ni-Mn-Ga; magnetic domain; surface relief; scanning electron microscopy (SEM);
D O I：
10.1016/j.scriptamat.2006.02.037
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The evolution of a magnetic domain pattern with an applied field in two perpendicular directions was studied in a Ni-Mn-Ga magnetic shape memory alloy by means of optical and scanning electron microscopy (SEM). The optical contrast of magnetic domains arises from surface undulation. This surface relief is coherent at the (101) twin boundary. However, the surface relief causes the trace of the (011) twin boundary to follow a zigzag pattern. These optical observations were confirmed by SEM Type II magnetic contrast. (c) 2006 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：2155 / 2160
页数：6
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