沈双娟;黄思川;蒋丽钦;黄志高;

• 1:福建师范大学物理与光电信息科技学院
• 2:福建师范大学物理与光电信息科技学院
• 3:福建师范大学物理与光电信息科技学院
• 4:福建师范大学物理与光电信息科技学院 福建福州350007

摘要(Abstract)：

基于一维自旋链模型,采用Monte Carlo方法模拟研究了具有反铁磁相互作用的自旋S-1和自旋S-3/2混合的亚铁磁系统的磁特性,重点研究了自旋的无序排列对此混合系统磁特性的影响.研究发现,基态时,当自旋S-1和自旋S-3/2交替混合(有序排列)时,系统存在M-H磁化曲线的阶梯效应;而当自旋S-1和自旋S-3/2无序混合时,系统的阶梯效应出现涨落,台阶甚至消失.最后,通过对系统自旋组态和能量的研究,解释了该混合系统中所产生的阶梯效应和相图.

关键词(KeyWords)： 磁性;混合自旋系统;Monte Carlo;无序排列

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金资助项目(6067655);; 福建省自然科学基金重点资助项目(E0320002)

作者(Authors): 沈双娟;黄思川;蒋丽钦;黄志高;

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