Microstructure and microwave absorption properties of carbon-coated iron nanocapsules

被引：327

作者：

Zhang, X. F. ^{[1
]}

Dong, X. L.

Huang, H.

Lv, B.

Lei, J. P.

Choi, C. J.

机构：

[1] Dalian Univ Technol, State Key Lab Mat Modificat Laser Ion & Electron, Dalian 116024, Liaoning, Peoples R China

[2] Dalian Univ Technol, Sch Mat Sci & Engn, Dalian 116024, Liaoning, Peoples R China

[3] Korea Inst Machine & Mat, Chang Won 641010, Kyungnam, South Korea

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2007年 / 40卷 / 17期

关键词：

D O I：

10.1088/0022-3727/40/17/056

中图分类号：

O59 [应用物理学];

学科分类号：

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.

引用

页码：5383 / 5387

页数：5

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