期刊
JOURNAL OF PHYSICS D-APPLIED PHYSICS
卷 40, 期 17, 页码 5383-5387出版社
IOP PUBLISHING LTD
DOI: 10.1088/0022-3727/40/17/056
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Carbon-coated Fe [Fe(C)] nanocapsules were synthesized by a modified arc-discharge method, and their microstructure and electromagnetic (EM) properties (2-18 GHz) were investigated by means of transmission electron microscopy, Raman spectroscopy and a network analyser. The reflection loss R of less than -20 dB was obtained in the frequency range 3.2-18 GHz. A minimum reflection loss of -43.5 dB was reached at 9.6GHz with an absorber thickness of 3.1mm. The in-depth study of relative complex permittivity and permeability reveals that the excellent microwave absorption properties are a consequence of a proper EM match in microstructure, a strong natural resonance, as well as multi-polarization mechanisms, etc.
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