Microwave-absorption properties of ZnO-coated iron nanocapsules

被引：371

作者：

Liu, X. G. ^{[1
]}

Geng, D. Y.

Meng, H.

Shang, P. J.

Zhang, Z. D.

机构：

[1] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2008年 / 92卷 / 17期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1063/1.2919098

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The electromagnetic (EM) characteristics of ZnO-coated Fe nanocapsules synthesized by arc discharging were studied at 2-18 GHz. A reflection loss (RL) exceeding -20 dB was obtained in the frequency range of 6.1-15.7 GHz for an absorber thickness of 1.5-5 mm. An optimal RL of -57.1 dB was found at 7.8 GHz for an absorber thickness of 3.00 mm. The excellent microwave-absorption properties are a consequence of a proper EM match in the nano-microstructure, a strong natural resonance, as well as multipolarization mechanisms. ZnO-coated Fe nanocapsules may be attractive candidates for EM-wave-absorption materials. (c) 2008 American Institute of Physics.

引用

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