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铁磁性形状记忆合金Ni-Mn-Ga是一种新型功能材料,它在磁场作用下能产生大的应变.研究了Ni50Mn29Ga21Tb1.2室温下的晶体结构和磁感生应变,并用O'Handley的解析模型分析合金产生大磁感生应变的原因是马氏体孪晶在磁场下的迁动.

参考文献

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[2] O'Handley RC. .Model for strain and magnetization in magnetic shape-memory alloys[J].Journal of Applied Physics,1998(6):3263-3270.
[3] Cherenko V A;Cesari E;Kokorin V V et al.The development of new ferromagnetid shape memory alloys in Ni-Mn-Ga system[J].Scripta Metallurgica et Materialia,1995,33:1239.
[4] Ullakko K;Huang J K;Kantner C et al.Large magnetic-field-induced strains in Ni2MnGa single crystals[J].Applied Physics Letters,1996,69:1966.
[5] Murray S J;Marioni M;Allen S m et al.6% magnetic-field-induced strain by twin-boundary motion in fwrromagnetic Ni-Mn-Ga[J].Applied Physics Letters,2000,77:886.
[6] 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.
[7] 彭志明,金学军,徐祖耀.Ni2MnGa合金结构及磁控形状记忆机制的研究进展[J].功能材料,2004(02):135-138.
[8] 赵增祺,吴双霞,王方恕,王强,江丽萍,王新林.含铽多晶Ni-Mn-Ga磁性记忆合金的大磁感生应变[J].稀有金属,2004(05):835-838.
[9] 赵增祺,熊玮,吴双霞,刘国征,黄继民,王新林.稀土多晶Ni-Mn-Ga合金磁性能的研究[J].稀土,2004(03):1-4.
[10] 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.
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