Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8156544 | Journal of Magnetism and Magnetic Materials | 2015 | 24 Pages |
Abstract
Double-layer absorbers with enhanced microwave absorbing properties were designed based on polyaniline and polyaniline/magnetite composite with a total thickness of 1Â mm. The double-layer microwave absorbers have better microwave absorbing properties than those of single-layer microwave absorbers, and the microwave absorbing properties of the double-layer structure are influenced by the coupling interactions between the absorbing layer and matching layer. When the absorbing layer is PANI with a thickness of 0.4Â mm, and the matching layer is PANI/Fe3O4 composite with a thickness of 0.6Â mm, the minimum reflection loss (RL) reaches â42Â dB at 29.27Â GHz and the absorption bandwidth with RL below â10Â dB is about 11.8Â GHz. While when PANI and PANI/Fe3O4 composite are acted as matching layer and absorbing layer, respectively, with the same thickness of 0.5Â mm, a minimum RL value of â54Â dB is observed at 33.72Â GHz and the absorption bandwidth is about 11.28Â GHz ranging from 27.24 to 38.52Â GHz with the RL value below â10Â dB.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Fenfang Xu, Li Ma, Qisheng Huo, Mengyu Gan, Jihai Tang,