Martensitic transformation and magnetic properties in high-Mn content Mn50Ni50−xInx ferromagnetic shape memory alloys
Martensitic transformation and magnetic properties in high-Mn content Mn50Ni50−xInx ferromagnetic shape memory alloys
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DOI：
10.1016/j.jallcom.2011.01.073
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发表时间：
2011-05
影响因子：
6.2
通讯作者：
H. Xuan;S. Ma;Q. Cao;Dunhui Wang;Y. Du
中科院分区：
文献类型：
--
作者：
H. Xuan;S. Ma;Q. Cao;Dunhui Wang;Y. Du
一系列Mn含量高达50at.%的Mn50Ni50−xInx（x=9.75，10，10.25，10.5 10.75和11）铁磁形状记忆合金制备了研究了Mn50Ni50− xInx合金的马氏体相变、磁热效应和磁电阻。随着x从9.75增加到11，MT温度从270降低到110K，奥氏体的居里温度保持相对恒定。在MT温度附近观察到大的正磁熵变和负磁电阻。Mn50Ni50− xInx合金的大磁熵变和磁电阻归因于温度和磁场诱导的MT。
A series of Mn50Ni50−xInx(x=9.75, 10, 10.25, 10.5 10.75, and 11) ferromagnetic shape memory alloys with Mn content as high as 50at.% were prepared. The martensitic transformation (MT), magnetocaloric effect, and magnetoresistance in Mn50Ni50−xInxalloys were investigated. With x increasing from 9.75 to 11, the MT temperature decreased from 270 to 110K and the Curie temperature of austenite remains relatively constant. Large positive magnetic entropy change and negative magnetoresistance were observed around MT temperatures in these alloys. Large magnetic entropy change and magnetoresistance would be ascribed to the temperature and magnetic field-induced MT in Mn50Ni50−xInxalloys.