Paper Title:
Temperature Dependence of the FMR Spectra of Polymer Composites with Nanocrystalline α-Fe/C Filler
  Abstract

Two different concentrations of nanocrystalline material: α-Fe/C were prepared by the carburization of nanocrystalline iron and characterized by XRD and SEM. The nanoparticles were next used as fillers in polymer nanocomposites using the in situ polycondensation reaction in a poly(ether-ester) matrix with two concentrations: 0.1 wt. % and 0.3 wt. %. The temperature dependence of the ferromagnetic resonance (FMR) spectra was investigated to study magnetic interactions in the compounds. The introduced FMR parameters (intensity and position of the right peak) describe well the temperature dependence of FMR spectra of strongly interacting magnetic nanoparticles. The FMR spectra depend strongly on the concentration of magnetic nanoparticles, which influence the magnetic interactions between them. Two main critical points of the matrix (the glass state and the freezing of benzene rings) influence the behaviour of the FMR spectra.

  Info
Periodical
Solid State Phenomena (Volume 128)
Main Theme
Edited by
Witold Łojkowski and John R. Blizzard, Urszula Narkiewicz and Janusz D. Fidelus
Pages
213-218
DOI
10.4028/www.scientific.net/SSP.128.213
Citation
N. Guskos, M. Maryniak, J. Typek, I. Pełech, U. Narkiewicz, Z. Rosłaniec, M. Kwiatkowska, "Temperature Dependence of the FMR Spectra of Polymer Composites with Nanocrystalline α-Fe/C Filler", Solid State Phenomena, Vol. 128, pp. 213-218, 2007
Online since
October 2007
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