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Issue 3, 2015
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Barium ferrite decorated reduced graphene oxide nanocomposite for effective electromagnetic interference shielding

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Abstract

There is an increased interest in the development of high performance microwave shielding materials against electromagnetic pollution in recent years. Barium ferrite decorated reduced graphene oxide (BaFe12O19@RGO) nanocomposite was synthesized by a high energy ball milling technique and its electromagnetic properties were investigated in the frequency range of 12.4–18 GHz (Ku band). The results showed that barium ferrite (BaFe12O19) nanoparticles with an average particle size of 20–30 nm were well distributed and firmly anchored onto the surface of the reduced graphene oxide sheets. The obtained nanocomposite exhibited a saturation magnetization of 18.1 emu g−1 at room temperature. The presence of BaFe12O19 nanoparticles in the nanocomposite enhances the space charge polarization, natural resonance, multiple scattering and the effective anisotropy energy leading to a high electromagnetic interference shielding effectiveness of 32 dB (∼99.9% attenuation) at a critical thickness of 3 mm. The results suggested that the as-prepared BaFe12O19@RGO nanocomposite showed great potential as an effective candidate for a new type of microwave absorbing material.

Graphical abstract: Barium ferrite decorated reduced graphene oxide nanocomposite for effective electromagnetic interference shielding

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Supplementary files

Article information


Submitted
23 Sep 2014
Accepted
06 Nov 2014
First published
12 Nov 2014

Phys. Chem. Chem. Phys., 2015,17, 1610-1618
Article type
Paper
Author version available

Barium ferrite decorated reduced graphene oxide nanocomposite for effective electromagnetic interference shielding

M. Verma, A. P. Singh, P. Sambyal, B. P. Singh, S. K. Dhawan and V. Choudhary, Phys. Chem. Chem. Phys., 2015, 17, 1610
DOI: 10.1039/C4CP04284K

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