Rotational magnetocaloric effect of anisotropic giant-spin molecular magnets
Rotational magnetocaloric effect of anisotropic giant-spin molecular magnets
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DOI：
10.1016/j.jmmm.2019.02.064
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发表时间：
2019-07-15
影响因子：
2.7
通讯作者：
Schnack, Juergen
中科院分区：
文献类型：
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作者：
Beckmann, Christian;Ehrens, Julian;Schnack, Juergen
在变化的外磁场中，由绝热温度变化组成的磁热效应不仅在振幅变化时出现，而且在各向异性磁性材料的情况下，在方向变化时也会出现。本文从理论上研究了Fe-8和Mn-12随磁场旋转的典型单分子磁体的磁热效应。我们通过研究非平衡热力学循环的影响来补充平衡情况的计算。
The magnetocaloric effect, that consists of adiabatic temperature changes in a varying external magnetic field, appears not only when the amplitude is changed, but in cases of anisotropic magnetic materials also when the direction is varied. In this article we investigate the magnetocaloric effect theoretically for the archetypical single molecule magnets Fe-8 and Mn-12 that are rotated with respect to a magnetic field. We complement our calculations for equilibrium situations with investigations of the influence of non-equilibrium thermodynamic cycles.