Preparation and Electromagnetic Loss of PAni-Co0.5Zn0.5Nd0.05Fe1.95O4 Nanocomposite

Abstract

Abstract: Polyaniline(PAni)-Co0.5Zn0.5Nd0.05Fe1.95O4 nanocomposite was synthesized by an in situ polymerization. The nanocomposites were characterized using X-ray diffraction(XRD), transmission electron microscopy(TEM) and Fourier transform infrared spectrometer(FTIR). The results of XRD and FTIR confirm the formation of PAni-Co0.5Zn0.5Nd0.05Fe1.95O4 nanocomposite. The average particle sizes of the pure PAni and PAni-Co0.5Zn0.5Nd0.05Fe1.95O4 composites are estimated to be about 60 and 80 nm by TEM, respectively.The complex permittivity (ε′- jε″) and complex permeability (μ′- jμ″) of the nanocomposites obtained were measured using vector network analyzer of HB8510B from 12.4 to 18.0 GHz. The results show that PAni-Co0.5Zn0.5Nd0.05Fe1.95O4 nanocomposite have both dieletric loss and magnetic loss. The dielectric loss tangent(tanε, ε=ε"/ε′) and magnetic loss tangent(tanμ, μ=μ"/μ′) values of PAni-Co0.5Zn0.5Nd0.05Fe1.95O4 nanocomposite are in the range of 0.22—0.34 and 0.27—0.35, respectively. The maximum reflection loss of the PAni-Co0.5Zn0.5Nd0.05Fe1.95O4 nanocomposite is about -7.31×10-29 C·m at 9.0 GHz with a bandwidth of 4.5 GHz (full frequency width at about a half of the peak response).

Key words: Composite, PAni-Co0.5Zn0.5Nd0.05Fe1.95O4, Electromagnetic loss

TrendMD:

MA Rui-Ting*, ZHAO Hai-Tao, ZHANG Gang. Preparation and Electromagnetic Loss of PAni-Co0.5Zn0.5Nd0.05Fe1.95O4 Nanocomposite[J]. Chem. J. Chinese Universities, 2010, 31(10): 1924.

References

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