研究表明,适当地添加稀土Tb在明显提高Ni50Mn29Ga21合金力学性能的同时,可以保持材料原有的居里温度和饱和磁化强度基本不变.微区成份能谱分析表明,稀土Tb在材料中主要存在于晶界.晶界上的Tb对材料的磁性能没有贡献,同时对晶粒内部Mn原子局域磁矩及其交换作用没有明显的影响.
参考文献
[1] | Ullakko K;Huang J K;Kantner C et al.Large magneticfield-induced strains in Ni2MnGa single crystals[J].Applied Physics Letters,1996,69:1966. |
[2] | O'Handley RC.;Marioni M.;Nembach H.;Allen SM.;Murray SJ. .Phenomenology of giant magnetic-field-induced strain in ferromagnetic shape-memory materials (invited)[J].Journal of Applied Physics,2000(9 Pt.2):4712-4717. |
[3] | Wang W H;Hu F X;Wu G H et al.Magnetic properties and structural phase transformation of Ni-Mn-Ga alloy[J].IEEE Transactions on Magnetics,2001,37:2715. |
[4] | Ullakko K;Ezer Y;Sozinov A et al.Magnetic-field-induced strains in polycrystalline Ni-Mn-Ga at room temperature[J].Scripta Materialia,2001,44:475. |
[5] | 赵增祺,熊玮,吴双霞,王海学,李雪梅,王新林.稀土铽对Ni-Mn-Ga磁性记忆合金力学性能的影响[J].稀土,2004(01):1-4. |
[6] | 郭世海,赵增祺,王新林,张羊换.Ni48Mn33Ga18Tb1合金的马氏体相变和磁性形状记忆效应[J].稀土,2002(02):26-29,33. |
[7] | Webster P J;Ziebeck K R A;Town S L et al.Magnetic order and phase transformation in Ni-Mn-Ga[J].Philosophical Magazine,1984,B49:295. |
[8] | 冯端;师昌绪;刘治国.材料科学导论[M].北京:化学工业出版社,2002:254. |
[9] | 徐光宪.稀土[M].北京:冶金工业出版社,1955:1. |
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