Field and temperature induced magnetic transition in Gd5Sn4: a giant magnetocaloric material.
Field and temperature induced magnetic transition in Gd5Sn4: a giant magnetocaloric material.
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DOI：
10.1103/physrevlett.90.117202
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发表时间：
2003-03
影响因子：
8.6
通讯作者：
D. Ryan;M. Elouneg-Jamróz;J. van Lierop;Z. Altounian;H. Wang
中科院分区：
文献类型：
--
作者：
D. Ryan;M. Elouneg-Jamróz;J. van Lierop;Z. Altounian;H. Wang
Gd5Sn4表现出与Gd5（Si，Ge）（4）系统中报道的相当的巨磁热效应。巨磁热效应与一阶变化，发生在约82 K的零场，并可以通过施加几个特斯拉的外场逆转。119 Sn穆斯堡尔谱表明，这种材料在很宽的温度和磁场范围内是磁性不均匀的。
Gd5Sn4 exhibits a giant magnetocaloric effect comparable to that reported in the Gd5(Si,Ge)(4) system. The giant magnetocaloric effect is associated with a first-order change that occurs at approximately 82 K in zero field, and can be reversed by the application of an external field of a few Tesla. 119Sn Mössbauer spectroscopy shows that this material is magnetically inhomogeneous over a wide range of temperatures and fields.