Broadband microwave absorption of CoNi@C nanocapsules enhanced by dual dielectric relaxation and multiple magnetic resonances

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	Broadband microwave absorption of CoNi@C nanocapsules enhanced by dual dielectric relaxation and multiple magnetic resonances
	H. Wang; Y. Y. Dai; W. J. Gong; D. Y. Geng; S. Ma; D. Li; W. Liu; Z. D. Zhang
	2013
发表期刊	Applied Physics Letters
ISSN	0003-6951
卷号	102 期号:22
摘要	Dual dielectric relaxation of the permittivity and multiple magnetic resonances of the permeability (including one natural resonance and two exchange resonance modes) are observed in CoNi@C nanocapsules in the same 5-17GHz frequency range which leads to a better electromagnetic-wave absorption than earlier reported for nanocomposites. A reflection loss (RL) exceeding -25 dB is obtained in a wide frequency range of 5-17 GHz when an appropriate absorber thickness between 2 and 4.8mm is chosen. For a 2mm absorber layer, a RL value exceeding -10 dB is achieved in the broad frequency range 12-18 GHz, which covers the whole K-u-band. (C) 2013 AIP Publishing LLC.
部门归属	[wang, han] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china. chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china. ; wang, h (reprint author), chinese acad sci, shenyang natl lab mat sci, inst met res, 72 wenhua rd, shenyang 110016, peoples r china. ; songma@imr.ac.cn
关键词	Ferromagnetic-resonance Nanoparticles Particles Absorbers
URL	查看原文
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/71522
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	H. Wang,Y. Y. Dai,W. J. Gong,et al. Broadband microwave absorption of CoNi@C nanocapsules enhanced by dual dielectric relaxation and multiple magnetic resonances[J]. Applied Physics Letters,2013,102(22).
APA	H. Wang.,Y. Y. Dai.,W. J. Gong.,D. Y. Geng.,S. Ma.,...&Z. D. Zhang.(2013).Broadband microwave absorption of CoNi@C nanocapsules enhanced by dual dielectric relaxation and multiple magnetic resonances.Applied Physics Letters,102(22).
MLA	H. Wang,et al."Broadband microwave absorption of CoNi@C nanocapsules enhanced by dual dielectric relaxation and multiple magnetic resonances".Applied Physics Letters 102.22(2013).