Magnetization studied on spin alignments in organic molecule-based ferrimagnetics

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	Magnetization studied on spin alignments in organic molecule-based ferrimagnetics
	H. H. Fu; K. L. Yao; Z. L. Liu
	2006
发表期刊	Solid State Communications
ISSN	0038-1098
卷号	139 期号:6 页码:289-294
摘要	A physics picture of spin alignments in molecule-based ferrimagnets is presented from studying the temperature dependence of the effective sublattice magnetic moments and the total reduced magnetization by means of Green's function theory combined with the Jordan-Wigner transformation. The ferrimagnetic chain includes an S = I biradical and an S = 1/2 monoradical with antiferromagnetic alternating interactions, and the S = I site in the chain is composed of two S = 1/2 spins coupled by a finite ferromagnetic interaction. From the calculations of the sublattice magnetic moments, the magnetic moment of the S = I biradical is negative, while that of the S = 1/2 monoradical is positive, leading to a ferrimagnetic ground state. With the different kinds of the elementary excitations and the competition between the magnetic interactions and thermal fluctuations, the temperature dependence of the magnetization displays rich thermodynamic properties. Meanwhile, the external magnetic field dependence of the magnetization has a clear plateau at one third of the saturation magnetization, which can be compared with the possible experimental findings. (c) 2006 Elsevier Ltd. All rights reserved.
部门归属	huazhong univ sci & technol, dept phys, 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	Molecular Magnet Ferrimagnetics Spin Lattice Model Green's Function Theory Crystal Chains System
URL	查看原文
WOS记录号	WOS:000240092300008
引用统计	被引频次：3[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/321006/34205
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	H. H. Fu,K. L. Yao,Z. L. Liu. Magnetization studied on spin alignments in organic molecule-based ferrimagnetics[J]. Solid State Communications,2006,139(6):289-294.
APA	H. H. Fu,K. L. Yao,&Z. L. Liu.(2006).Magnetization studied on spin alignments in organic molecule-based ferrimagnetics.Solid State Communications,139(6),289-294.
MLA	H. H. Fu,et al."Magnetization studied on spin alignments in organic molecule-based ferrimagnetics".Solid State Communications 139.6(2006):289-294.