Magnetoelastic coupling influence on the magnetocaloric effect in ferromagnetic materials
Magnetoelastic coupling influence on the magnetocaloric effect in ferromagnetic materials
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DOI：
10.1016/j.jmmm.2003.12.870
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发表时间：
2004-05-01
影响因子：
2.7
通讯作者：
Amaral, JS
中科院分区：
文献类型：
--
作者：
Amaral, VS;Amaral, JS
应用朗道相变理论框架描述了具有磁弹性和磁电子耦合的铁磁系统的磁热效应。的M-4系数的能量膨胀，其信号确定的相变的顺序，和它的温度依赖性，被证明是至关重要的。T-C以上的宽磁熵峰的存在与这些耦合有关。(C)2004 Elsevier B. V.保留所有权利。
The Landau theory for phase transitions framework is applied to describe the magnetocaloric effect in ferromagnetic systems with magnetoelastic and magnetoelectronic couplings. The M-4 coefficient in the energy expansion, whose signal determines the order of the phase transition, and its temperature dependence, are shown to be of crucial importance. The existence of a broad magnetic entropy peak above T-C is related to these couplings. (C) 2004 Elsevier B.V. All rights reserved.