Large reversible magnetocaloric effect in RMn2 (R = Tb, Dy, Ho, Er) compounds

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	Large reversible magnetocaloric effect in RMn2 (R = Tb, Dy, Ho, Er) compounds
	Zuo, WL ; Hu, FX ; Sun, JR ; Shen, BG
刊名	JOURNAL OF ALLOYS AND COMPOUNDS
	2013
卷号	575 页码:162
关键词	RMn2 compounds Magnetocaloric effect Magnetic entropy change Magnetic refrigeration capacity
ISSN号	0925-8388
通讯作者	Zuo, WL (reprint author), Chinese Acad Sci, State Key Lab Magnetism, Inst Phys, Beijing 100190, Peoples R China.
中文摘要	Magnetocaloric effect (MCE) of RMn2 (R = Tb, Dy, Ho, Er) compounds are investigated. TbMn2 and DyMn2 crystallize in cubic Laves phase structure (C15 type), whereas HoMn2 and ErMn2 crystallize in hexagonal Laves phase structure (C14 type). For TbMn2 compound, the field-induced metamagnetic transition accompanying a spontaneous cell volume expansion is observed (inverse MCE), which leads to a large positive value (8.3 J kg(-1) K-1) of magnetic entropy change around 36 K under the field change of 0-1 T, while the maximal values of magnetic entropy change (Delta S-M) and the refrigerant capacity (RC) for other RMn2 (R = Dy, Ho, Er) compounds are -15.7, -18.4, -25.5 J kg(-1) K-1 and 403.6, 404.3, 316.0 J kg(-1) around their T-C with negligible thermal and magnetic hysteresis loss for the field change of 0-5 T, respectively. The results suggest that RMn2 (R = Dy, Ho, Er) may be appropriate candidates for magnetic refrigerant working at low temperature region 10-80 K. (c) 2013 Elsevier B.V. All rights reserved.
资助信息	National Natural Science Foundation of China; Hi-Tech Research and Development program of China; Key Research Program of the Chinese Academy of Sciences; National Basic Research of China
语种	英语
公开日期	2014-01-16
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/57151]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Zuo, WL,Hu, FX,Sun, JR,et al. Large reversible magnetocaloric effect in RMn2 (R = Tb, Dy, Ho, Er) compounds[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2013,575:162.
APA	Zuo, WL,Hu, FX,Sun, JR,&Shen, BG.(2013).Large reversible magnetocaloric effect in RMn2 (R = Tb, Dy, Ho, Er) compounds.JOURNAL OF ALLOYS AND COMPOUNDS,575,162.
MLA	Zuo, WL,et al."Large reversible magnetocaloric effect in RMn2 (R = Tb, Dy, Ho, Er) compounds".JOURNAL OF ALLOYS AND COMPOUNDS 575(2013):162.