Frequency dependence of the electrical conductivity in Ag/PAN nanocomposites

Abstract

The frequency dispersion of the electrical conductivity of silver/polyacrylonitrile nanocomposite films is studied at various temperatures and AgNO3 contents in an initial mixture. The frequency dependences of the nanocomposites in the range 103–106 Hz are found to be well described by power law f 0.8. A charge transfer mechanism responsible for the conductivity of the nanocomposites is proposed. Silver clusters Ag 4 2+ and Ag 8 2+ are assumed to be present in the polymer.