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Green's function theory of ferromagnetic resonance in magnetic superlattices with damping
Qiu, R. K.; Guo, F. F.; Zhang, Z. D.; rkqiu@163.com
2016
Source PublicationJOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
ISSN0304-8853
Volume399Pages:228-235
AbstractWe explore a quantum Green's-function method to study the resonance absorption of magnetic materials. The relationship between the resonance magnon (spin wave) density and the resonance frequency of a superlattice consisting of two magnetic layers with damping and antiferromagnetic interlayer exchange coupling is studied. The effects of temperature, interlayer coupling, anisotropy, external magnetic field and damping on the the resonance frequency and resonance magnon density are investigated. The resonance excitation probability for a magnon is proportional to the resonance magnon density. In the classic methods, the imaginary part of magnetic permeability represents the resonance absorption in magnetic materials. In the quantum approach, the resonance magnon density can be used to estimate the strength of the resonance absorption. In the present work, a quantum approach is developed to study resonance absorption of magnetic materials and the results show the method to obtain a magnetic multilayered materials with both high resonance frequency and high resonance absorption. (C) 2015 Elsevier B.V. All rights reserved.
description.department[qiu, r. k. ; guo, f. f.] shenyang univ technol, shenyang 110870, peoples r china ; [zhang, z. d.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china
KeywordQuantum Green's-function Method Resonance Magnon Density Resonance Frequency Magnetic Superlattice With Damping
Funding OrganizationNational Natural Science Foundation of China [51331006]
Indexed Bysci
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/74870
Collection中国科学院金属研究所
Corresponding Authorrkqiu@163.com
Recommended Citation
GB/T 7714
Qiu, R. K.,Guo, F. F.,Zhang, Z. D.,et al. Green's function theory of ferromagnetic resonance in magnetic superlattices with damping[J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS,2016,399:228-235.
APA Qiu, R. K.,Guo, F. F.,Zhang, Z. D.,&rkqiu@163.com.(2016).Green's function theory of ferromagnetic resonance in magnetic superlattices with damping.JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS,399,228-235.
MLA Qiu, R. K.,et al."Green's function theory of ferromagnetic resonance in magnetic superlattices with damping".JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS 399(2016):228-235.
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