赵梦歌,冯琳

• 1:太原理工大学物理与光电工程学院

摘要(Abstract)：

用电弧熔炼和甩带快淬的方法制备了NiMnGa基磁性形状记忆合金。研究了Cr、Fe和Co元素掺杂对磁性形状记忆合金NiMnGa的马氏体相变和磁性的影响。结果表明,在Ni50Mn33Ga17中用少量Cr替代Ni,马氏体相变温度随着Cr的增加而下降,而居里温度则升高,在NiCrMnGa中进一步掺杂Fe或Co都可以进一步降低马氏体相变温度并提高居里温度,马氏体相变温度的变化基本上遵循随电子浓度降低而降低的规律;此外,在NiMnGa中用Cr取代Ni会使得马氏体相和母相的铁磁交换作用同时增强,进一步在NiCrMnGa中掺杂Co对提高母相磁化强度更为有利,而掺杂Fe则对抑制马氏体相磁化强度增加更为有利。

关键词(KeyWords)： NiMnGa合金;掺杂;马氏体相变;磁性能

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金资助项目(51301119);; 山西省青年科技研究基金资助项目(2013021010-1)

作者(Author): 赵梦歌,冯琳

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