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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
Source PublicationApplied Physics Letters
ISSN0003-6951
Volume102Issue:22
AbstractDual 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.
description.department[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
KeywordFerromagnetic-resonance Nanoparticles Particles Absorbers
URL查看原文
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/71522
Collection中国科学院金属研究所
Recommended Citation
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).
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