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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >Microstructure and microwave absorption properties of carbon-coated iron nanocapsules
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Microstructure and microwave absorption properties of carbon-coated iron nanocapsules

机译：碳包覆铁纳米胶囊的微观结构和微波吸收特性

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摘要

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.
机译：通过改进的电弧放电方法合成了碳包覆的Fe [Fe（C）]纳米胶囊，并通过透射电子显微镜，拉曼光谱和网络研究了它们的微观结构和电磁（EM）特性（2-18 GHz）分析器。在3.2-18 GHz频率范围内获得的反射损耗R小于-20 dB。在9.6GHz处，吸收器厚度为3.1mm，最小反射损耗为-43.5 dB。对相对复介电常数和磁导率的深入研究表明，优异的微波吸收性能是微观结构中适当的电磁匹配，强大的自然共振以及多极化机制等的结果。

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