Paper Title
Rietveld Refinement and Electrical Properties of 0.9(Bi0.8Sr0.2FeO3)-0.1(Na0.5Bi0.5TiO3) Ceramics

Abstract
The investigation on the structural and electrical properties of 0.9(Bi0.8Sr0.2FeO3)-0.1(Na0.5Bi0.5TiO3) polycrystalline ceramic sample prepared by conventional solid state reaction method is presented here. The crystalline phase (rhombohedral symmetry with R3c space group) of the prepared sample was recognized with the help of X-ray diffraction data using Rietveld analysis. Dielectric measurements were performed on the prepared composition in the frequency range 10Hz-5MHz at different temperatures. Ac conductivity variation with frequency revealed the presence of Jonscher power law. The activation energy values are less than 1 confirming the contribution of oxygen ion vacancies to the conduction as well as relaxation processes. Keywords: Ceramics, X-ray diffraction, Impedance Spectroscopy.