Magnetic entropy change and refrigerant capacity in GdFeAl compound

被引：0
|
作者：
Dong, Q.Y. [1 ]
Shen, B.G. [1 ]
Chen, J. [1 ]
Shen, J. [1 ,2 ]
Zhang, H.W. [1 ]
Sun, J.R. [1 ]
机构：
[1] State Key Laboratory for Magnetism, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
[2] School of Material Science and Engineering, Hebei University of Technology, Tianjin 300130, China
来源：
Journal of Applied Physics | 2009年 / 105卷 / 07期
关键词：
Magnetic properties and magnetocaloric effect of GdFeAl compound have been investigated. The small saturated magnetization of GdFeAl compound is caused by the antiferromagnetic coupling between the magnetic moments of Gd and Fe atoms. A second-order magnetic phase transition is confirmed around 265 K. The maximum magnetic entropy change for GdFeAl compound is 3.7 J kg-1 K-1 under the field change of 0-5 T. However; a large refrigerant capacity of 420 J kg-1 is obtained; which is due to the large full width at half peak of the magnetic entropy change versus temperature curve in GdFeAl compound. © 2009 American Institute of Physics;
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