Investigation on Microwave Absorption Properties for Multiwalled Carbon Nanotubes/Fe/Co/Ni Nanopowders as Lightweight Absorbers
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http://dx.doi.org/10.1021/jp202078p |
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Título
Investigation on Microwave Absorption Properties for Multiwalled Carbon Nanotubes/Fe/Co/Ni Nanopowders as Lightweight AbsorbersFecha de publicación
2011-06Editor
ACSISSN
1932-7447Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
http://pubs.acs.org/doi/full/10.1021/jp202078pVersión
info:eu-repo/semantics/publishedVersionResumen
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 ... [+]
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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Journal of Physical Chemistry C, 2011, 115 (29)Derechos de acceso
Copyright © 2011 American Chemical Society
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