The magnetocaloric effect: The role of magnetic anisotropy
The magnetocaloric effect: The role of magnetic anisotropy
复制标题
磁热效应：磁各向异性的作用
DOI：
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发表时间：
1993
期刊：
影响因子：
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通讯作者：
R. E. Watson
中科院分区：
文献类型：
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作者：
L. H. Bennett;R. McMichael;R. Shull;L. Swartzendruber;R. E. Watson
在铁磁体中，由施加磁场引起的磁熵变在居里点附近的温度范围内最大。在顺磁温度状态下，磁热效应的强度预计会随着构成材料的各个磁矩的大小而单调上升。此类材料的磁性与采用磁制冷的设备相关。探讨了该问题的一个方面，即单轴磁各向异性对磁热效应的影响。给出了具有各向异性的面心立方晶格上经典海森堡铁磁体的蒙特卡罗模拟结果。
In a ferromagnet, the magnetic entropy change induced by the application of a magnetic field is greatest in the temperature regime near the Curie point. In the paramagnetic temperature regime, the magnitude of the magnetocaloric effect is expected to rise monotonically with the size of the individual moments that make up the material. The magnetic properties of such materials are relevant to devices employing magnetic refrigeration. One aspect of the problem, namely the impact of uniaxial magnetic anisotropy on the magnetocaloric effect, is explored. The results of Monte Carlo simulations for classical Heisenberg ferromagnets on a fcc lattice with anisotropy are presented.