Giant magnetocaloric effect in the Ising antiferromagnet DySb

被引：117
作者：
Hu, W. J.
Du, J.
Li, B.
Zhang, Q.
Zhang, Z. D.
机构：
[1] Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China
[2] Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Int Ctr Mat Phys, Shenyang 110016, Peoples R China
来源：
APPLIED PHYSICS LETTERS | 2008年 / 92卷 / 19期
基金：
中国国家自然科学基金;
关键词：
D O I：
10.1063/1.2928233
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The magnetic phase transitions and the magnetocaloric effect in the Ising antiferromagnet DySb have been studied. A field-induced sign change of the magnetocaloric effect has been observed which is related to a first-order field-induced metamagnetic transition from the antiferromagnetic to the ferromagnetic states at/below the Neel temperature T-N, while the negative field-induced entropy change is found to be associated with the first- order magnetic transition from the paramagnetic to the ferromagnetic states above TN. The large magnetic-entropy change (-20.6 J/kg K at 11 K for a field change of 7 T-), together with small hysteresis, suggests that DySb could be a potential material for magnetic refrigeration in the low-temperature range. (c) 2008 American Institute of Physics.
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页数：3
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