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Date of Publication:2013-01-01

Journal:材料研究学报

Volume:27

Issue:4

Page Number:349-354

ISSN No.:1005-3093

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 multipolarization in microwave range.

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