Preparation and characterization of Sr Substituted BaBi2Nb2O9 Ceramics

Abstract

BaBi2Nb2O9, SrBi2Nb2O9 and there solid solution composition powder were synthesized by solid state reaction route. The 2 layer BLSF compounds and solid solution phases were developed at a calcination temperature of 9000c. The powders were uniaxially pressed into pallets and were sintered at a sintering temperature of 11000c. The densed ceramic shows an anisotropic grain structure which was investigated using scanning electron microscope. BLSF phase formation was confined by XRD analysis. Dielectric and ferroelectric properties measurement, silver electrode were applied on both surfaces of the pallets. Electrical properties were measured using Hioki LCR meter. The ferroelectric polarization of the materials was measured in a loop tracer. The dielectric and ferroelectric properties of solid solution compositions were better than individual pure composition.