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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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Ni52MI24Ga24金属间化合物的单晶生长和磁性功能
, PP. 353-357
Keywords: Ni52Mn24Ga24,形状记忆,磁致伸缩
Abstract:
研究了Ni52Mn24Ga24合金单晶在磁场作用下能产生的目前最大的磁致伸缩应变.发现了该材料的双向相变应变效应以及磁场对此的增强现象在1.2T磁场的作用下,可逆的相变应变达4%以上.实现这一结果的关键条件是马氏体变体的择优取向报道了获得马氏体变体的择优取向样品的单晶生长特性和后处理方法.根据前人报道的理论模型分析了实验结果,指出磁感生应变的物理机制是磁场提供的Zeeman能驱动变体间孪晶界的移动.
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