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Dielectric relaxation and charge transfer mechanism in the composite material of nanoparticles BaTiO3 with a modified surface in polystyrene

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Abstract

We present the results of investigations related to the dielectric relaxation process in the composite material of BaTiO3 nanoparticles with the surface modified by hydroxyl groups and sodium oleate in polystyrene for the frequency range 1–140 kHz. The dispersion of the dielectric permittivity in the composite material with the volume fraction 5–35% is detected due to the presence of the relaxation process resulted in a blurred spectrum of relaxation times. It is found that the presence of surface’s modification leads to two effects related to the ac conductivity: a saturation of the frequency dependence and the further drastic growth, which may correspond to the specific hopping mechanism.

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Authors and Affiliations

  1. Department of Physics and Nanotechnology, Kursk State University, Radishcheva st., 33, 305000, Kursk, Russia

    Nikita A. Emelianov & Oleg V. Yacovlev

  2. Department of Theoretical Physics, Kursk State University, Radishcheva st., 33, 305000, Kursk, Russia

    Eugene B. Postnikov

  3. Department of Chemistry, Kursk State University, Radishcheva st., 33, 305000, Kursk, Russia

    Alexey A. Chaplygin

  4. Region Centre of Nanotechnology, Southwest State University, 50 let Oktyabrya st. 94, 305040, Kursk, Russia

    Alexander S. Chekadanov

  5. Department of Solid State Physics, Voronezh State Technical University, Moskovsky pr. 14, 394026, Voronezh, Russia

    Wisam M. Al Mandalavi

Authors
  1. Nikita A. Emelianov
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  2. Eugene B. Postnikov
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  3. Oleg V. Yacovlev
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  4. Alexey A. Chaplygin
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  5. Alexander S. Chekadanov
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  6. Wisam M. Al Mandalavi
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Correspondence to Nikita A. Emelianov.

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Emelianov, N.A., Postnikov, E.B., Yacovlev, O.V. et al. Dielectric relaxation and charge transfer mechanism in the composite material of nanoparticles BaTiO3 with a modified surface in polystyrene. Eur. Phys. J. B 88, 291 (2015). https://doi.org/10.1140/epjb/e2015-60510-x

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  • DOI: https://doi.org/10.1140/epjb/e2015-60510-x

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