Giant magnetocaloric effect of MnAs1-xSbx
Giant magnetocaloric effect of MnAs1-xSbx
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DOI：
10.1063/1.1419048
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发表时间：
2001-11-12
影响因子：
4
通讯作者：
Tanabe, Y
中科院分区：
文献类型：
--
作者：
Wada, H;Tanabe, Y
发现MnAs具有巨磁热效应，在318 K发生一级铁磁-顺磁相变。5 T磁场引起的磁熵变最大值高达30 J/K kg，超过常规磁制冷材料2-4倍。在磁场变化为5 T时，绝热温变可达13 K.用10%的Sb替代As可以减小热滞效应，使居里温度降低到280 K，同时保持巨磁热性能。(C)2001年美国物理学会。
A giant magnetocaloric effect was found in MnAs, which undergoes a first-order ferromagnetic to paramagnetic transition at 318 K. The magnetic entropy change caused by a magnetic field of 5 T is as large as 30 J/K kg at the maximum value, which exceeds that of conventional magnetic refrigerant materials by a factor of 2-4. The adiabatic temperature change reaches 13 K in a field change of 5 T. The substitution of 10% Sb for As reduces the thermal hysteresis and lowers the Curie temperature to 280 K, while the giant magnetocaloric properties are retained. (C) 2001 American Institute of Physics.