A phenomenological fitting curve for the magnetocaloric effect of materials with a second-order phase transition

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	A phenomenological fitting curve for the magnetocaloric effect of materials with a second-order phase transition
	Dong, QY ; Zhang, HW ; Sun, JR ; Shen, BG ; Franco, V
刊名	JOURNAL OF APPLIED PHYSICS
	2008
卷号	103 期号:11
关键词	MAGNETIC ENTROPY CHANGE
ISSN号	0021-8979
通讯作者	Dong, QY: Chinese Acad Sci, State Key Lab Magnetism, Inst Phys, Beijing 100080, Peoples R China.
中文摘要	The magnetic entropy change of polycrystalline samples Gd, La(Fe(0.92)Co(0.08))(11.83)Al(1.17), LaFe(10.8)Si(2.2), Mn(5)Ge(2.7)Ga(0.3), Nd(2)AlFe(13)Mn(3), and TbCo(2) with a second-order phase transition has been investigated. A uniform phenomenological function that describes the magnetic entropy change is found for these materials. This could be of great benefit for the design of magnetic refrigerators. The field dependence of the critical exponent for the variation in the maximum entropy change with field is studied. The critical exponent value of 2/3, which is predicted by the mean field theory, is only satisfied for moderate field values. The refrigerant capacity is analyzed and compared to the predictions of the fitting function. (C) 2008 American Institute of Physics.
收录类别	SCI
语种	英语
公开日期	2013-09-17
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/33164]
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	Dong, QY,Zhang, HW,Sun, JR,et al. A phenomenological fitting curve for the magnetocaloric effect of materials with a second-order phase transition[J]. JOURNAL OF APPLIED PHYSICS,2008,103(11).
APA	Dong, QY,Zhang, HW,Sun, JR,Shen, BG,&Franco, V.(2008).A phenomenological fitting curve for the magnetocaloric effect of materials with a second-order phase transition.JOURNAL OF APPLIED PHYSICS,103(11).
MLA	Dong, QY,et al."A phenomenological fitting curve for the magnetocaloric effect of materials with a second-order phase transition".JOURNAL OF APPLIED PHYSICS 103.11(2008).