Journal
APPLIED PHYSICS LETTERS
Volume 93, Issue 22, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3042099
Keywords
carbon nanotubes; cobalt alloys; ferromagnetic materials; iron alloys; microwave materials; nanotechnology; nanowires; nickel alloys; polymers
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Funding
- National Natural Science Foundation of China [50632040]
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Thin-walled carbon nanotubes (CNTs) filled with different ferromagnetic alloy (FeCo, FeNi, and FeCoNi) nanowires were prepared by using trichlorobenzene as carbon precursor. They were dispersed into epoxy resin and then coated onto 180x180 mm(2) aluminum substrates to form microwave-absorption coatings with 2.0 mm thickness. Re'ection loss exceeding -5 dB was obtained between 5 and 18 GHz for coating containing 1.3 wt % FeCo-filled CNTs. A minimum re'ection loss value of -28.2 dB was achieved at 15.2 GHz in FeCoNi-filled CNTs/epoxy coating. The areal densities of coatings are only 2.35 kg/m(2), which is favorable for the applications requiring low density.
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