Porous corn-like Fe3O4 nanosheets decorated fluffy graphene nanocomposites and their enhanced microwave absorption properties

Porous corn-like Fe3O4 nanosheets decorated fluffy graphene nanocomposites and their enhanced... Porous corn-like Fe O nanosheets decorated fluffy graphene nano-composites (Fe O @GNS) were synthesized. The elec- 3 4 3 4 tromagnetic parameters were obtained from the composites that were combined with 80 wt% paraffin. The results showed that the nanocomposites exhibited a maximum RL of − 50.6 dB at 9.12 GHz when the corresponding thickness was 3.4 mm, and the effective frequency bandwidth (RL ≤ − 10dB) was 4.64 GHz. The corresponding attenuation coefficient was 273 at 9.12 GHz. The microwave absorption mechanism mainly comes from the combined effect of dielectric loss and magnetic loss. In addition, the special structure composed of porous nanosheets and fluffy graphene played a key role in improving the microwave absorption performance. 1 Introduction match condition can lead to excellent microwave absorption characteristic [4, 5]. In recent years, communication equipment’s fast develop- Fe O is a traditional magnetic material, and its magnetic 3 4 ment and electronic devices’ widespread usage produced properties are closely related to its size and shape. How- serious electromagnetic interference (EMI) pollution [1]. ever, due to the large difference between the dielectric con- Microwave absorbers can effectively absorb electromagnetic stant and permeability of pure F e O , the requirements of 3 4 waves and the http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Materials Science: Materials in Electronics Springer Journals

Porous corn-like Fe3O4 nanosheets decorated fluffy graphene nanocomposites and their enhanced microwave absorption properties

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Publisher
Springer US
Copyright
Copyright © 2018 by Springer Science+Business Media, LLC, part of Springer Nature
Subject
Materials Science; Optical and Electronic Materials; Characterization and Evaluation of Materials
ISSN
0957-4522
eISSN
1573-482X
D.O.I.
10.1007/s10854-018-9326-3
Publisher site
See Article on Publisher Site

Abstract

Porous corn-like Fe O nanosheets decorated fluffy graphene nano-composites (Fe O @GNS) were synthesized. The elec- 3 4 3 4 tromagnetic parameters were obtained from the composites that were combined with 80 wt% paraffin. The results showed that the nanocomposites exhibited a maximum RL of − 50.6 dB at 9.12 GHz when the corresponding thickness was 3.4 mm, and the effective frequency bandwidth (RL ≤ − 10dB) was 4.64 GHz. The corresponding attenuation coefficient was 273 at 9.12 GHz. The microwave absorption mechanism mainly comes from the combined effect of dielectric loss and magnetic loss. In addition, the special structure composed of porous nanosheets and fluffy graphene played a key role in improving the microwave absorption performance. 1 Introduction match condition can lead to excellent microwave absorption characteristic [4, 5]. In recent years, communication equipment’s fast develop- Fe O is a traditional magnetic material, and its magnetic 3 4 ment and electronic devices’ widespread usage produced properties are closely related to its size and shape. How- serious electromagnetic interference (EMI) pollution [1]. ever, due to the large difference between the dielectric con- Microwave absorbers can effectively absorb electromagnetic stant and permeability of pure F e O , the requirements of 3 4 waves and the

Journal

Journal of Materials Science: Materials in ElectronicsSpringer Journals

Published: May 30, 2018

References

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