Dielectric and Impedance Studies on BiFeO3–BaTiO3 Solid Solutions

Abstract

xBiFeO 3 -(1-x)BaTiO 3 form substitutional ferroelectromagnetic solid solutions with the rhomobohedral distortion up to 67% of BiFeO 3 . The paper reports data on phase formation, electrical conductivity anti dielectric constant as a function of temperature and frequency for the samples with x = 0.9 and 0.8 which are isostructural to BiFeO 3 . The conductivity is found to be dependent on both frequency and temperature in the range 30 to 400 °C. The temperatures of dielectric anomalies are found to be lower than that of BiFeO 3 . The complex impedance studies indicate relaxation effects.