Ni_(50)Mn_(29)Ga_(21)Tb_x磁性形状记忆合金的晶体结构研究Crystal structures of polycrystalline Ni50Mn29Ga21Tbx magnetic shape memory alloys
赵增祺,王志成,韩莉,黄继民,熊玮
摘要(Abstract):
研究了Ni50Mn29Ga21Tbx系列磁性记忆合金不同状态下的晶体结构。列出了近年来发现的几种Ni-Mn-Ga合金的马氏体的详细资料。结果表明,在不改变Ni50Mn29Ga21合金组分的条件下,Tb的加入并没有改变合金的马氏体晶体结构。经过比较和计算,发现Ni50Mn29Ga21Tbx合金系列的晶体结构属于非调制型马氏体。
关键词(KeyWords): Ni50Mn29Ga21Tbx;磁性记忆合金;稀土Tb;晶体结构
基金项目(Foundation): 内蒙古自然科学基金资助项目(200308020214)
作者(Author): 赵增祺,王志成,韩莉,黄继民,熊玮
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DOI: 10.14024/j.cnki.1004-244x.2005.03.010
参考文献(References):
- [1] Tickle R, James R D, Shield T, et al. Ferromagnetic shape memory in the NiMnGasystem[J]. IEEE Trans Magn, 1999,35: 4301.
- [2] Ezera Y, Sozinov A, Kimmel G, et al. Magnetic shape memory (MSM) effect in textured polycrystalline Ni2MnGa[C] //SPIE Conf Proc ECI, Newport Beach, California, 1999,3675:244.
- [3] O'Handley R C, Murray S J, Marioni M, et al. Phenomenology of giant magnetic - field - induced strain in ferromagnetic shape -memory materials[J]. J Appl Phys, 2000,87:4712.
- [4] VasiL' ev A N, Bozhko A D, Khovailo V V. Structural and magnetic phase transitions in shape - memory alloys Ni2+xMn1-xGa [J]. Phys Rev B, 1999,59:1113.
- [5] Chernenko V A, Cesari E, Kokoin V V, et al. The development of new ferromagnetic shape memory alloys in Ni - Mn -Ga system[J]. Scripta Metall Mater, 1995, 33: 1239.
- [6] Zhao Zengqi, Wu Shuangxia, Wang Fangshu, et al. Large magnetic - field - induced strains in rare earth polycrystalline Ni-Mn-Ga[J]. Rear Metal, 2004,23(3): 241-245.
- [7] Zhao Zengqi, Xiong Wei, Wu Shuangxia, et al. Phase transformation behaviors and effects of terbirium in polycrystalline Ni - Mn - Ga magnetic shape memory alloys[J]. Rear Earth, 2004, 22(4): 567-570.
- [8] Pons J, Chernenko V A. Crystal structure of martenstic phase ir Ni - Mn - Ga shape memory alloys[J]. Acta Mater. 2004,48: 3027 - 3038.