Magnetic properties of Ising metamagnet in both external longitudinal and transverse fields
文献类型：期刊论文
| 作者 | J. J. Geng ; G. Z. Wei |
| 刊名 | Journal of Magnetism and Magnetic Materials
 |
| 出版日期 | 2009 |
| 卷号 | 321期号:13页码:1964-1970 |
| 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 |
| ISSN号 | 0304-8853 |
| 中文摘要 | 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. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/31932]  |
| 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 | 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. |
入库方式： OAI收割
来源：金属研究所
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