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Chinese Journal of Materials Research  2013, Vol. 27 Issue (4): 349-354    DOI:
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Dielectric Spectra Fitting and Polarization of #br#Fe/Paraffin Nanocomposites
XIE Changjiang DONG Xinglong** HUANG Hao XUE Fanghong Shah Asif
(Key Laboratory of Materials Modification by Laser, Ion, and Electron Beams, Ministry of Education; School of Materials Science and Engineering, Dalian University of Technology, Dalian 116024)
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XIE Changjiang DONG Xinglong** HUANG Hao XUE Fanghong Shah Asif. Dielectric Spectra Fitting and Polarization of #br#Fe/Paraffin Nanocomposites. Chinese Journal of Materials Research, 2013, 27(4): 349-354.

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Abstract  Fe nanopartilces synthesized by a DC arc-discharge plasma method were mixed with paraffin to fabricate nanocomposites. Dielectric spectra of these Fe/ paraffin nanocomposites were measured in 2-18 GHz range. Theoretical fitting of the complex permittivity spectra were carried out using the universal dielectric law, Debye relaxation theory and Cole-Cole equation, and compared with the measured ones. The results show that the universal dielectric law can be used to fit the essential outline, but Cole-Cole equation can accurately exhibit fluctuation of the complex permittivity spectra. It is also confirmed that the polarization mechanism may be equivalent to orientation polarization instead of the multi-polarization in microwave range.
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