Effects of hydrostatic pressure on the magnetism and martensitic transition of Ni-Mn-In magnetic superelastic alloys
Effects of hydrostatic pressure on the magnetism and martensitic transition of Ni-Mn-In magnetic superelastic alloys
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DOI：
10.1063/1.2830999
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发表时间：
2008-01-07
影响因子：
4
通讯作者：
Acet, Mehmet
中科院分区：
文献类型：
--
作者：
Manosa, Lluis;Moya, Xavier;Acet, Mehmet
我们报告了磁性超弹性Ni-Mn-In合金的磁化和差热分析测量作为马氏体转变压力的函数。结果表明，施加压力对马氏体相变的性能有显著影响。所有的转变温度都随着压力的增加而升高。Ni50Mn34In16的温度随压强的变化速率最大，这是因为它在转变时的熵变很小。这种对转变温度的强烈压力依赖性使得施加相对较低的静水压力诱导马氏体转变成为可能。(c) 2008年美国物理研究所。
We report magnetization and differential thermal analysis measurements as a function of pressure across the martensitic transition in magnetically superelastic Ni-Mn-In alloys. It is found that the properties of the martensitic transformation are significantly affected by the application of pressure. All transition temperatures shift to higher values with increasing pressure. The largest rate of temperature shift with pressure has been found for Ni50Mn34In16 as a consequence of its small entropy change at the transition. Such a strong pressure dependence of the transition temperature opens up the possibility of inducing the martensitic transition by applying relatively low hydrostatic pressures. (c) 2008 American Institute of Physics.