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The frequency and temperature dependences of dielectric permittivity and electric conductivity of high-density polyethylene with the additive of monodisperse barium titanate particles are studied. It was shown that dielectric permittivity and electric conductance increase with increasing of filler concentration at all temperatures. In this case, conductivity has hopping mechanizm described by the Josher theory. The corresponding exponent parameter and activation energy decrease as well as conductivity rises with increasing of barium titanate concentration. The experimental data of dielectric permittivity are compared with the Maxwell-Garnett and Bruggeman theories.

Dielectric Relaxation and Electric Conductivity of Polyethylene Doped with Barium Titanate Particles