TMRG studies on spin alignment in molecule-based ferrimagnetics

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	TMRG studies on spin alignment in molecule-based ferrimagnetics
	Q. M. Liu; K. L. Yao; Z. L. Liu
	2005
发表期刊	Physics Letters A
ISSN	0375-9601
卷号	338 期号:3-5 页码:315-322
摘要	A physical picture of spin alignment in organic molecule-based ferrimagnets is presented from studying the thermal effective magnetic moment of the sublattice by use of the transfer matrix renormalization group. We conclude that the classical antiparallel spin alignment is not the most stable state. The three-spin system tends to parallel alignment when the exchange interaction between the biradical and the monoradical molecules is much weaker than that within the biradical, which can result in the decrease of the effective magnetic moment upon lowering the temperature. More importantly, we give the theoretical evidence that even the antiparallel spin alignment in the biradical-monoradical alternating chain does not necessarily lead to ferrimagnetic spin ordering due to the formation of the spin singlet pairs, which suppresses the ferrimagnetic spin alignment. (c) 2005 Elsevier B.V. All rights reserved.
部门归属	huazhong univ sci & technol, dept phys, wuhan 430074, peoples r china. huazhong univ sci & technol, state key lab laser technol, wuhan 430074, peoples r china. chinese acad sci, int ctr mat phys, shenyang 110015, peoples r china.;liu, qm (reprint author), huazhong univ sci & technol, dept phys, wuhan 430074, peoples r china;nosilentlamb@yahoo.com.cn klyao@hust.edu.cn
关键词	Molecular Magnet Spin Lattice Model Renormalization Group Methods Ferrimagnetics Simple Classical Pictures Crystal-structure Breakdown Chain
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/40006
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Q. M. Liu,K. L. Yao,Z. L. Liu. TMRG studies on spin alignment in molecule-based ferrimagnetics[J]. Physics Letters A,2005,338(3-5):315-322.
APA	Q. M. Liu,K. L. Yao,&Z. L. Liu.(2005).TMRG studies on spin alignment in molecule-based ferrimagnetics.Physics Letters A,338(3-5),315-322.
MLA	Q. M. Liu,et al."TMRG studies on spin alignment in molecule-based ferrimagnetics".Physics Letters A 338.3-5(2005):315-322.