Study of the magnetic phase transitions and magnetocaloric effect in Dy2Cu2In compound

被引：54
作者：
Zhang, Yikun [1 ,2 ,3 ,4 ]
Xu, Xiao [1 ,2 ,3 ]
Yang, Yang [1 ,2 ,3 ]
Hou, Long [1 ,2 ,3 ]
Ren, Zhongming [1 ,2 ,3 ]
Li, Xi [1 ,2 ,3 ]
Wilde, Gerhard [4 ]
机构：
[1] Shanghai Univ, State Key Lab Adv Special Steels, Shanghai 200072, Peoples R China
[2] Shanghai Univ, Shanghai Key Lab Adv Ferromet, Shanghai 200072, Peoples R China
[3] Shanghai Univ, Sch Mat Sci & Engn, Shanghai 200072, Peoples R China
[4] Univ Munster, Inst Mat Phys, Wilhelm Klemm Str 10, D-48149 Munster, Germany
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2016年 / 667卷
基金：
中国国家自然科学基金;
关键词：
Dy2Cu2In compound; Magnetocaloric effect; Magnetic phase transitions; Magnetic refrigeration; ENTROPY CHANGE; RE; ER;
D O I：
10.1016/j.jallcom.2016.01.157
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The magnetic properties and magnetocaloric effect (MCE) in Dy2Cu2In compound have been investigated. Dy2Cu2In undergoes two magnetic phase transitions, a paramagnetic to ferromagnetic (FM) at T-C similar to 49.5 K followed by a spin reorientation (SR) at T-SR similar to 19.5 K. For a magnetic field change of 0-7 T, the maximum values of the magnetic entropy change (-Delta S-M(max)) are estimated to be 16.5 around T-C and 6.7 J/kg K around T-SR with a large relative cooling power (RCP) value of 617 J/kg. The modified Arrott plots and universal curves of the rescaled Delta S-M confirmed that the magnetic phase transitions in Dy2Cu2In compound belongs the second order phase transitions. The present results may provide some clues to search for new magnetocaloric materials belonging to RE2T2X system. (c) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：130 / 133
页数：4
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