Thermodynamics of a quasi-one-dimensional spin system for molecule-based ferrimagnets

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	Thermodynamics of a quasi-one-dimensional spin system for molecule-based ferrimagnets
	K. L. Yao; H. H. Fu; Z. L. Liu
	2005
发表期刊	Solid State Communications
ISSN	0038-1098
卷号	135 期号:3 页码:197-202
摘要	A physical picture of electron spin alignments in organic molecule-based ferrimagnets is given from numerical calculations of magnetic specific heat (C) and magnetic susceptibility (chi) as functions of temperature and static magnetic field (B) in terms of an Ising Hamiltonian for an alternating spin chain. The double-peak structure of specific heat appears for different parameter ratios and different magnetic field B, indicating that one peak originates from the ferromagnetic nature and the other from the antiferromagnetic nature. Meanwhile, we study Successively the influence of intermolecular and intramolecular interaction on the magnetic susceptibility, showing that the ferrornagnetic spin alignment in the alternating molecular chains of biradicals and monoradicals is equivalent to the ferromagnetic alignment of the effective S=1/2 spins. Our results are consistent with those of the Quantum Monte Carlo simulations and the exact diagonalization method and in qualitative agreement with the experimental ones. (c) 2005 Elsevier Ltd. 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.;fu, hh (reprint author), huazhong univ sci & technol, dept phys, wuhan 430074, peoples r china;fuhust547@sohu.com
关键词	Molecule-based Ferrimagnets Thermodynamics Transfer Matrix Method Simple Classical Pictures Numerical-calculations Ferromagnet Breakdown Radicals
URL	查看原文
WOS记录号	WOS:000230378400011
引用统计	被引频次：10[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/321006/35175
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	K. L. Yao,H. H. Fu,Z. L. Liu. Thermodynamics of a quasi-one-dimensional spin system for molecule-based ferrimagnets[J]. Solid State Communications,2005,135(3):197-202.
APA	K. L. Yao,H. H. Fu,&Z. L. Liu.(2005).Thermodynamics of a quasi-one-dimensional spin system for molecule-based ferrimagnets.Solid State Communications,135(3),197-202.
MLA	K. L. Yao,et al."Thermodynamics of a quasi-one-dimensional spin system for molecule-based ferrimagnets".Solid State Communications 135.3(2005):197-202.