Low-field induced giant magnetocaloric effect in TmCuAl compound
Low-field induced giant magnetocaloric effect in TmCuAl compound
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DOI：
10.1063/1.4804576
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发表时间：
2013-05
影响因子：
4
通讯作者：
Zhaojun Mo;Jun Shen;Liqin Yan;Jianfeng Wu;Lichen Wang;Jing Lin;Chengchun Tang;B. Shen
中科院分区：
文献类型：
--
作者：
Zhaojun Mo;Jun Shen;Liqin Yan;Jianfeng Wu;Lichen Wang;Jing Lin;Chengchun Tang;B. Shen
在 TmCuAl 化合物中在 4 K（氦的沸点）附近观察到巨大的低场可逆磁热效应。对于 0-2 T 的磁场变化，在没有热和磁场磁滞损耗的情况下，磁熵变 (-Delta S-M(max)) 和绝热温度变化 (Delta T-ad(max)) 的最大值分别为 17.2 J/Kg K 和 4.6 K。特别是，在0-1 T的场变化下，获得了巨大的-Delta S-M(max)值(12.2 J/Kg K)。结果表明，TmCuAl化合物可以被认为是低温低场磁制冷剂的良好候选材料。 (C) 2013 AIP 出版有限责任公司。
A giant low field reversible magnetocaloric effect has been observed in TmCuAl compound around 4 K, which is the boiling point of helium. The maximum value of magnetic entropy change (-Delta S-M(max)) and adiabatic temperature change (Delta T-ad(max)) is 17.2 J/Kg K and 4.6 K without thermal and field hysteresis loss, for field changes of 0-2 T, respectively. Especially, the giant value of -Delta S-M(max) (12.2 J/Kg K) is obtained for a field change of 0-1 T. The results indicate that the TmCuAl compound could be considered as a good candidate material for low-temperature and low-field magnetic refrigerant. (C) 2013 AIP Publishing LLC.