Abstract
The effect of calcination temperature on phase formation and sintering temperature on structural, dielectric, electrical and ferroelectric properties of Ba2Bi4Ti5O18 (BBT), Pb2Bi4Ti5O18 (PBT) and Sr2Bi4Ti5O18 (SBT) ceramics prepared by solution combustion route using glycine as a fuel are investigated in this paper. Calcination temperature was optimized at 650°C for BBT and 750°C for SBT and PBT, at which these compounds showed pure phase formation. It was observed that density and grain size of the sintered pellets increases with increasing sintering temperature. The dielectric constant was found to be dependent on grain size and density. Transition temperature, activation energy and remnant polarization were found to increase with an increase in sintering temperature. Porosity and conductivity decreases with an increase in the sintering temperature. Thus improving the dielectric, electrical and ferroelectric properties of five layered Aurivillius oxides.
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