Giant magnetic entropy change in antiferromagnetic DyCuSi compound

被引：47
作者：
Chen, J. [1 ]
Shen, B. G. [1 ]
Dong, Q. Y. [1 ]
Sun, J. R. [1 ]
机构：
[1] Chinese Acad Sci, State Key Lab Magnetism, Inst Phys, Beijing 100190, Peoples R China
来源：
SOLID STATE COMMUNICATIONS | 2010年 / 150卷 / 31-32期
基金：
中国国家自然科学基金;
关键词：
Ni2In-type structure; Magnetocaloric effect; Metamagnetic transition; MAGNETOCALORIC MATERIALS; MAGNETORESISTANCE; REFRIGERATION; TEMPERATURE;
D O I：
10.1016/j.ssc.2010.05.017
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Magnetic properties and magnetocaloric effects (MCE) of intermetallic DyCuSi compound have been investigated by means of magnetization measurements. It is found that DyCuSi is an antiferromagnet with a Neel temperature T-N = 10 K and undergoes a field-induced metamagnetic transition from antiferromagnetic to ferromagnetic states below T-N. The MCE around T-N has been studied by using the field-dependent magnetization data. The maximal magnetic entropy change (-Delta S-M) and refrigerant capacity (RC) are 24.0 J/kg K and 381 J/kg, respectively, for the field change of 0-5 T. The giant Delta S-M, without hysteresis loss around T-N is found to result from the field-induced metamagnetic transition. (C) 2010 Elsevier Ltd. All rights reserved.
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收藏
页码：1429 / 1431
页数：3
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