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掺Mn对NiFeGa磁性形状记忆材料单晶特性的影响
引用本文:于淑云,刘何燕,曲静萍,李养贤,柳祝红,陈京兰,代学芳,吴光恒.掺Mn对NiFeGa磁性形状记忆材料单晶特性的影响[J].物理学报,2006,55(6):3022-3025.
作者姓名:于淑云  刘何燕  曲静萍  李养贤  柳祝红  陈京兰  代学芳  吴光恒
作者单位:(1)河北工业大学材料学院,天津 300130; (2)河北工业大学材料学院,天津 300130;中国科学院物理研究所磁学国家重点实验室,北京 100080; (3)中国科学院物理研究所磁学国家重点实验室,北京 100080
基金项目:河北省自然科学基金;国家自然科学基金
摘    要:在单晶Ni54Fe19Ga27中掺入少量Mn,对增强磁交换相互作用,提高居里温度和稳定了B2相并增强晶格的刚度,起到了非常明显的作用.Mn的存在使样品中取向内应力得以保持,提高了变体择优取向的水平,大大提高了单晶的相变应变和磁场增强作用.发现内应力对超弹性性质的影响也很明显. 关键词: 磁性形状记忆合金 NiFeGa 单晶 超弹性

关 键 词:磁性形状记忆合金  NiFeGa  单晶  超弹性
文章编号:1000-3290/2006/55(06)/3022-04
收稿时间:09 18 2005 12:00AM
修稿时间:2005-09-182005-11-26

Effect of Mn doping on properties of NiFeGa ferromagnetic shape memory alloys
Yu Shu-Yun,Liu He-Yan,Qu Jing-Ping,Li Yang-Xian,Liu Zhu-Hong,Chen Jing-Lan,Dai Xue-Fang,Wu Guang-Heng.Effect of Mn doping on properties of NiFeGa ferromagnetic shape memory alloys[J].Acta Physica Sinica,2006,55(6):3022-3025.
Authors:Yu Shu-Yun  Liu He-Yan  Qu Jing-Ping  Li Yang-Xian  Liu Zhu-Hong  Chen Jing-Lan  Dai Xue-Fang  Wu Guang-Heng
Institution:1.School of Material Science and Engineering, Hebei University of Technology, Tianjin 300130, China; 2.Belling National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Being 100080, China
Abstract:Light doping of Mn in Ni54Fe19Ga27 plays a significant role in enhancing the magnetic exchange interaction and the rigidity of crystal lattice, it also increases the Curie temperature and stabilizes B2 phase of the material. The oriented internal stress in the single crystals improves the reorientation of the variants due to the existence of Mn. This greatly increases the shape memory deformation and the magnetic field-controlled strain. The internal stress also has an obvious effect on the superelastic behaviors.
Keywords:NiFeGa
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