Modelling of the magnetocaloric effect in Gd1-xTbx and MnAs compounds

被引：26
作者：
Balli, M.
Fruchart, D.
Gignoux, D.
Miraglia, S.
Hlil, E. K.
Wolfers, P.
机构：
[1] CNRS, Cristallog Lab, F-38042 Grenoble 9, France
[2] CNRS, Lab Louis Neel, F-38042 Grenoble, France
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2007年 / 316卷 / 02期
关键词：
mean field theory; Bean-Rodbell model; magnetocaloric effect; magnetic refrigeration;
D O I：
10.1016/j.jmmm.2007.03.019
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Magnetic cooling technology is based on the magnetocaloric effect (MCE) due to the entropy changes arising from the coupling of the magnetic moment system with the applied magnetic field. In this paper, we propose a simple analysis based on the molecular field theory and on the Bean-Rodbell model to justify the MCE evidenced on Gd1-xTbx and MnAs compounds. Based on this model, the change of magnetic entropy and adiabatic temperature upon magnetic field are calculated. The predicted results agree nicely with the experimental data. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：E558 / E561
页数：4
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