Intrinsic magnetocaloric effect at a first-order magnetic transition

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	Intrinsic magnetocaloric effect at a first-order magnetic transition
	B. Li ; H. Meng ; W. J. Ren ; Z. D. Zhang
刊名	Epl
	2012
卷号	97 期号:5
关键词	adiabatic temperature-change ni43mn46sn11 compounds phase-transitions entropy change gd5si2ge2 la0.8nd0.2fe11.5si1.5 lafe11.6si1.4 vicinity
ISSN号	0295-5075
中文摘要	A four-parameter method has been developed to determine the magnetocaloric effect associated with a first-order magnetic transition. In order to prevent misevaluation due to the intrinsically irreversible features, the transition is mimicked by a reversible process. The magnetization and the isothermal magnetic-entropy change are shown to be dependent on only four intrinsic parameters, which can be easily obtained in experiments. A new method to calculate the magnetic-entropy change is derived, which is referred to as Landau approach. The four-parameter method as well as the Landau approach are demonstrated on the famous magnetocaloric material LaFe11.5Si1.5. They benefit from the experimental investigation of MCE very much and make the characterization of MCE much easier. This may be helpful for the search of better magnetocaloric materials. Copyright (C) EPLA, 2012
原文出处	://WOS:000301952600028
公开日期	2013-02-05
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/60043]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	B. Li,H. Meng,W. J. Ren,et al. Intrinsic magnetocaloric effect at a first-order magnetic transition[J]. Epl,2012,97(5).
APA	B. Li,H. Meng,W. J. Ren,&Z. D. Zhang.(2012).Intrinsic magnetocaloric effect at a first-order magnetic transition.Epl,97(5).
MLA	B. Li,et al."Intrinsic magnetocaloric effect at a first-order magnetic transition".Epl 97.5(2012).