Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8158332 | Journal of Magnetism and Magnetic Materials | 2013 | 5 Pages |
Abstract
Multiwalled carbon nanotubes (MWCNTs) and FeNi nanopowders have been facilely synthesized by a simple chemical method. Excellent microwave absorption properties have been obtained due to a proper combination of complex permittivity and permeability which result from the high resistivity of the sintered composite of MWCNTs and the magnetic FeNi nanopowders. The minimum reflection loss (RL) is less than â20 dB at 2.72-18.0 GHz with a thickness between 1.21 and 6.00 mm for 40 wt% MWCNT/FeNi composites, and a minimum RL value of â47.6 dB is observed at 12.09 GHz on a specimen with a matching thickness of 1.79 mm. The frequency of microwave absorption complies with the quarter-wavelength (λ/4) matching model. The MWCNT/FeNi nanopowders are a promising candidate for lightweight microwave absorption materials.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Fusheng Wen, Fang Zhang, Jianyong Xiang, Wentao Hu, Shijun Yuan, Zhongyuan Liu,