| 单表面层磁性超晶格的相变性质 |
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| 引用本文： | 常少梅,郑宝兵.单表面层磁性超晶格的相变性质[J].宝鸡文理学院学报(自然科学版),2011,31(3):56-59,63. |
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| 作者姓名： | 常少梅 郑宝兵 |
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| 作者单位： | 宝鸡文理学院物理与信息技术系,陕西宝鸡,721016 |
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| 基金项目： | 宝鸡文理学院重点项目(ZK1033) |
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| 摘 要： | 目的研究具有单个表面层的磁性超晶格的表面性质。方法在横场伊辛模型的框架内,采用平均场近似的方法。结果讨论了表面层交换作用的临界值同内层交换作用之间的关系以及表面层交换作用的临界值与交替的主体材料之间的依赖关系。结论数值结果与以前的理论计算结果比较发现,采用平均场近似与其他方法所得到的结果一致。
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| 关 键 词： | 超晶格 磁性 相变性质 |
The transition properties of magnetic alternating superlattice with one surface layer |
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| CHANG Shao-mei,ZHENG Bao-bing.The transition properties of magnetic alternating superlattice with one surface layer[J].Journal of Baoji College of Arts and Science(Natural Science Edition),2011,31(3):56-59,63. |
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| Authors: | CHANG Shao-mei ZHENG Bao-bing |
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| Institution: | CHANG Shao-mei,ZHENG Bao-bing(Dept.Phys.& Infom.Tech.,Baoji Univ.Arts & Sci.,Baoji 721016,Shaanxi,China) |
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| Abstract: | Aim To investigate the transition properties of magnetic alternating superlattice with one surface layer.Methods Using mean-field approximation method is adopted in the framework of transverse Ising model to investigate the aforesaid aim.Results The dependence of the critical value of the exchange constant in the surface layer on interlayer exchange constants and bulk exchange constants are discussed.Conclusion The results that we have obtained are in good agreement with the earlier theoretical works. |
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| Keywords: | superlattice magnetism transition properties |
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