Magnetic properties of Ising metamagnet in both external longitudinal and transverse fields

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	Magnetic properties of Ising metamagnet in both external longitudinal and transverse fields
	J. J. Geng; G. Z. Wei
	2009
发表期刊	Journal of Magnetism and Magnetic Materials
ISSN	0304-8853
卷号	321 期号:13 页码:1964-1970
摘要	The phase diagrams of a two-sublattice Ising metamagnet at finite temperature in a mixed longitudinal field and a transverse magnetic field are investigated by the use of an effective-field theory (EFT) with correlations. In addition to the second-order transition lines, the first-order transition lines are also presented in the phase diagrams, since the Gibbs free energy can be calculated numerically. The results show that there is no fourth-order critical line in the phase diagrams given by using EFT as found by using mean-field theory (MFT). The tricritical lines and their projection in the t-h(x) plane obtained by using EFT are also quite different from those by using MFT. Only one type of phase diagram is obtained by using EFT while three kinds of phase diagrams are obtained by using MFT, which indicates that only the first kind of phase diagrams obtained by using MFT is reliable. Furthermore, it is shown that the region of first-order transitions increases as the transverse magnetic field h(x) decreases. (C) 2008 Elsevier B. V. All rights reserved.
部门归属	[geng, jiajia; wei, guozhu] northeastern univ, coll sci, shenyang 110004, peoples r china. [wei, guozhu] acad sinica, int ctr mat phys, shenyang 110015, peoples r china.;wei, gz (reprint author), northeastern univ, coll sci, shenyang 110004, peoples r china, peoples r china;guozhuwei02@sina.com
关键词	Transverse Field Ising Metamagnet Effective-field Theory Gibbs Free Energy First-order Phase Transition Multicritical Behavior Tricritical Behavior Monte-carlo Phase Model Antiferromagnet Simulation Anomalies Febr2
URL	查看原文
WOS记录号	WOS:000265427200013
引用统计	被引频次：8[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/321006/31932
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	J. J. Geng,G. Z. Wei. Magnetic properties of Ising metamagnet in both external longitudinal and transverse fields[J]. Journal of Magnetism and Magnetic Materials,2009,321(13):1964-1970.
APA	J. J. Geng,&G. Z. Wei.(2009).Magnetic properties of Ising metamagnet in both external longitudinal and transverse fields.Journal of Magnetism and Magnetic Materials,321(13),1964-1970.
MLA	J. J. Geng,et al."Magnetic properties of Ising metamagnet in both external longitudinal and transverse fields".Journal of Magnetism and Magnetic Materials 321.13(2009):1964-1970.