Structural, dielectric and conductivity properties of Mn2+:PVP & Ni2+:PVP polymer films

Poly (N-vinyl pyrrolidone) (PVP) and Mn2+ and Ni2+:PVP polymer films have been prepared by a solution casting method. The amorphous nature of the polymer electrolytes has been confirmed based on the X-ray diffraction analysis. The Fourier Transform Infrared Spectra confirm the complex formation of the polymer with the dopant transition metal ions. The conductivity analysis of doped polymer films has revealed a high ionic conductivity and it has been found to be 1.3 x 10(-4) S cm(-1), at room temperature. The conductivity of the films increases with an increase in the frequency and temperature. The dielectric measurements of the sample have been performed in the frequency range 1 Hz-1 MHz and in the temperature range of 273-373 K. Dielectric properties, such as dielectric constant, dielectric loss, electric modulus and conductivity of the PVP:Mn2+ and PVP:Ni2+ films have been studied. The dielectric behavior has been analyzed using dielectric permittivity, and electric modulus of the samples.