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Investigation on Microwave Absorption Properties for Multiwalled Carbon Nanotubes/Fe/Co/Ni Nanopowders as Lightweight Absorbers

Fusheng WenState Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinghuangdao 066004, People’s Republic of ChinaFang ZhangState Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinghuangdao 066004, People’s Republic of ChinaZhongyuan LiuState Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinghuangdao 066004, People’s Republic of China

2011en

ABI

Annotatsiya

Multiwalled carbon nanotubes (MWCNTs)/Fe, MWCNTs/Co, and MWCNTs/Ni nanopowders have been prepared conveniently by a simple chemical method. The excellent microwave absorption properties in S-band have been obtained due to proper combination of the complex permeability and permittivity resulting from the magnetic nanoparticles and lightweight MWCNTs. The frequency of microwave absorption obeys the quarter-wavelength matching model. For the most excellent microwave absorption properties in S-band, it is found that the reflection loss exceeds −20 dB from 2.04 to 3.47 GHz for the absorber thickness between 3.36 and 5.57 mm, and a minimum reflection loss value of −39 dB was observed at 2.68 GHz on a specimen with a matching thickness of 4.27 mm for MWCNTs/Fe. The MWCNTs/Fe/Co/Ni nanopowders all can be a promising candidate for lightweight microwave absorption materials in S-band.

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Identifikatorlar

DOI: 10.1021/jp202078p

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