The temperature dependence of tunneling current-voltage characteristics in polianiline-polystyrene-barium titanate nanocomposite

Tunneling current-voltage characteristics of nanocomposites in the form of polymer polyaniline-polystyrene matrices filled with ferroelectric BaTiO
₃
nanoparticles were investigated by scanning tunneling microscopy and spectroscopy methods. The observed hysteresis of current-voltage characteristics both below and above the Curie temperature can be explained with using a space charge limited conduction model. In this case, activation energy of the charge traps located at the “nanoparticle-matrix” interface depends on the polarization of BaTiO
₃
nanoparticles.