Martensitic transformation and magnetic field-induced strain in Fe-Mn-Ga shape memory alloy
Martensitic transformation and magnetic field-induced strain in Fe-Mn-Ga shape memory alloy
复制标题
DOI：
10.1063/1.3213353
复制
发表时间：
2009-08-24
影响因子：
4
通讯作者：
Ishida, K.
中科院分区：
文献类型：
--
作者：
Omori, T.;Watanabe, K.;Ishida, K.
研究了 Fe-Mn-Ga 单晶和多晶合金的马氏体和磁性能。研究发现Fe-Mn-Ga合金表现出从顺磁L2(1) Heusler母相到铁磁L1(0)马氏体相的马氏体相变。通过施加7T的磁场，马氏体转变温度增加了约20K，并且观察到变磁相变。此外，在Fe(43)Mn(28)Ga(29)单晶中证实了与磁场诱导正向转变相关的0.6%的磁场诱导应变。
Martensitic and magnetic properties of Fe-Mn-Ga single and polycrystalline alloys were investigated. It was found that Fe-Mn-Ga alloys exhibit martensitic transformation from the paramagnetic L2(1) Heusler parent phase to the ferromagnetic L1(0) martensite phase. The martensitic transformation temperatures increased by about 20 K by the application of a magnetic field of 7 T, and a metamagnetic phase transition was observed. In addition, a magnetic field-induced strain of 0.6% associated with magnetic field-induced forward transformation was confirmed in an Fe(43)Mn(28)Ga(29) single crystal.