Magnetic properties and shape memory of Fe-doped Ni52Mn24Ga24 single crystals
Magnetic properties and shape memory of Fe-doped Ni52Mn24Ga24 single crystals
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DOI：
10.1063/1.1447003
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发表时间：
2002-01
影响因子：
4
通讯作者：
Guangheng Wu;W. Wang;Jinglan Chen;L. Ao;Zongshun Liu;W. Zhan;T. Liang;Huibin Xu
中科院分区：
文献类型：
--
作者：
Guangheng Wu;W. Wang;Jinglan Chen;L. Ao;Zongshun Liu;W. Zhan;T. Liang;Huibin Xu
合成了一种赝四元Heusler合金Ni_（52）Mn_（16）Fe_（88）Ga_（24）单晶。Fe取代Mn增强了磁交换作用，使居里温度提高到381 K。Fe还将Ni的磁矩相对于化学计量的Heusler组成增加到0.41 μB。马氏体相变的应变在零场下为2.4%，在1.2T的磁场下可提高到4.2%。在291 K时，施加1.2 T的磁场，在无应力的晶体中沿沿着[001]产生了1.15%的场致应变。
Single crystals of a pseudoquaternary Heusler alloy, Ni52Mn16Fe8Ga24, have now been synthesized. The substitution of Fe for Mn strengthens the magnetic exchange interactions, increasing the Curie temperature to 381 K. The Fe also increases the Ni magnetic moment to 0.41 μB relative to that in the stoichiometric Heusler composition. The strain accompanying the martensitic transformation is 2.4% in zero field and can be enhanced to 4.2% by a field of 1.2 T. A field-induced strain of 1.15% has been induced along [001] in unstressed crystals with magnetic fields of 1.2 T applied at 291 K.