Effects of competition between the anisotropy and the spin quantum number on the magnon energy gap in a four-layer ferromagnetic superlattice

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	Effects of competition between the anisotropy and the spin quantum number on the magnon energy gap in a four-layer ferromagnetic superlattice
	R. K. Qiu; P. P. Song; Z. D. Zhang
	2009
发表期刊	Journal of Magnetism and Magnetic Materials
ISSN	0304-8853
卷号	321 期号:19 页码:3031-3037
摘要	The magnon energy bands are studied for a four-layer ferromagnetic superlattice, with regard to the effects of the competition between the anisotropy and the spin quantum number. A spacial attention is also paid of the effects for the symmetry of the system. It is found that there modulated energy gaps exist in the magnon energy band along K(x) direction perpendicular to the superlattice plane. The magnetic anisotropy affects significantly the magnon energy gaps. The sero energy gap Dw(23) correlates with the conditions between anisotropy constants, D(1) + D(3) = D(2) + D(4) and D(1) + D(3) (or D(2) = D(4)), while the disappearance of the magnon energy gaps Dw(12) and Dw(34) corresponds to a translational symmetry of x-direction in a unit cell. When the parameters of the system deviate from these conditions, the energy gaps Dw(12), Dw(23) and Dw(34) become larger. There is a competition effect of the the anisotropy and the spin quantum number on the magnon energy gaps Dw(12) and Dw(23). When the symmetry of the system is higher, the competition can achieve a balance to cause the sero energy gap. (C) Elsevier B.V. All rights reserved.
部门归属	[qiu, rong-ke; song, pan-pan] shenyang univ technol, shenyang 110023, peoples r china. [qiu, rong-ke; zhang, zhi-dong] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [qiu, rong-ke; zhang, zhi-dong] chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china.;qiu, rk (reprint author), shenyang univ technol, shenyang 110023, peoples r china;rkqiu@163.com
关键词	Ferromagnetic Superlattice Magnon Energy Gap Anisotropy Spin Quantum Number Interlayer Exchange Coupling Symmetry Of The System Magnetically Structural Symmetry Layered Heisenberg Ferrimagnets Wave Theory Interlayer Exchange Magnetization Magnetoresistance Multilayers Composites Dependence Magnets
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WOS记录号	WOS:000268022700011
引用统计	被引频次：12[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/321006/32247
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	R. K. Qiu,P. P. Song,Z. D. Zhang. Effects of competition between the anisotropy and the spin quantum number on the magnon energy gap in a four-layer ferromagnetic superlattice[J]. Journal of Magnetism and Magnetic Materials,2009,321(19):3031-3037.
APA	R. K. Qiu,P. P. Song,&Z. D. Zhang.(2009).Effects of competition between the anisotropy and the spin quantum number on the magnon energy gap in a four-layer ferromagnetic superlattice.Journal of Magnetism and Magnetic Materials,321(19),3031-3037.
MLA	R. K. Qiu,et al."Effects of competition between the anisotropy and the spin quantum number on the magnon energy gap in a four-layer ferromagnetic superlattice".Journal of Magnetism and Magnetic Materials 321.19(2009):3031-3037.