The origin of large overestimation of the magnetic entropy changes calculated directly by Maxwell relation

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	The origin of large overestimation of the magnetic entropy changes calculated directly by Maxwell relation
	W. B. Cui; W. Liu; Z. D. Zhang
	2010
发表期刊	Applied Physics Letters
ISSN	0003-6951
卷号	96 期号:22
摘要	By investigating the nature of the first-order magnetostructural phase transition, we point out the origin of large overestimation of magnetic entropy changes calculated by directly applying the Maxwell relation. Furthermore, if the mass variations in ferromagnetic and paramagnetic phases on temperature are taken into consideration in two-phase region, taking MnAsC(x), (Mn,Al)As, and Mn(0.994)Fe(0.004)As compounds as example, based on the modified Maxwell relation, the large overestimation and discrepancy of magnetic entropy changes disappear. The magnetic entropy changes are equivalent with the values by Clausius-Claperyon equation, indicating the validity of this modified approach. (C) 2010 American Institute of Physics. [doi:10.1063/1.3446843]
部门归属	[liu, wei] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china. chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china.;liu, w (reprint author), chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china;wliu@imr.ac.cn
关键词	Lead Compounds Magnetic Hysteresis Magnetoelectric Effects Metallic Glasses Tuning Adiabatic Temperature-change Gd5si2ge2
URL	查看原文
WOS记录号	WOS:000278404800043
引用统计	被引频次：41[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/31055
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	W. B. Cui,W. Liu,Z. D. Zhang. The origin of large overestimation of the magnetic entropy changes calculated directly by Maxwell relation[J]. Applied Physics Letters,2010,96(22).
APA	W. B. Cui,W. Liu,&Z. D. Zhang.(2010).The origin of large overestimation of the magnetic entropy changes calculated directly by Maxwell relation.Applied Physics Letters,96(22).
MLA	W. B. Cui,et al."The origin of large overestimation of the magnetic entropy changes calculated directly by Maxwell relation".Applied Physics Letters 96.22(2010).