Investigation of the microwave-absorbing properties of Fe-filled carbon nanotubes

Carbon nanotubes encapsulated Fe nanowire composites were synthesized via pyrolyzing of ferrocene. The reflection loss (R.L.), matching frequency ( f m) and matching thickness ( d m) were calculated using the theory of the absorbing wall. The electromagnetic properties and microwave-absorbing charac...

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Bibliographic Details
Published in:Materials letters 2007-06, Vol.61 (16), p.3547-3550
Main Authors: Lin, Haiyan, Zhu, Hong, Guo, Hongfan, Yu, Liufang
Format: Article
Language:English
Subjects:
Aerospace materials
Carbon nanotubes
Microwave absorbers
Nanocomposites
Pyrolyzing synthesis
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Summary:Carbon nanotubes encapsulated Fe nanowire composites were synthesized via pyrolyzing of ferrocene. The reflection loss (R.L.), matching frequency ( f m) and matching thickness ( d m) were calculated using the theory of the absorbing wall. The electromagnetic properties and microwave-absorbing characteristic effects by the encapsulation of metal Fe were investigated in a frequency range of 8–18 GHz. With matching thickness of 3.5 mm, the maximum reflection loss is about − 22.73 dB for the absorber. The bandwidth corresponding to the reflection loss below − 10 dB is more than 4.22 GHz. With increasing thickness, the peak value of the reflection loss shifts to a lower frequency.
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2007.01.077