Structural and dielectric properties of barium strontium, titanate (Ba(ÿ)SrxTiO$) ceramics with x—
0.25, 0.5 and 0.75 were investigated. The Ba(i-xjSrxTiOs ceramics were synthesised by solid state
reaction method. Microstructure, surface morphology and dielectric properties of the synthesised
ceramics were examined using XRD, SEM and Impedance Spectroscopy respectively. XRD results
revealed that all samples contained BaTiOg as primary phase with tetragonal perovskite crystal
structure. The crystallite size slightly increased with the increasing of Sr contents. SEM micrographs
showed that the microstructure become denser when Sr contents increased. Impedance spectroscopy
showed dielectric constant for all samples were decreased with increasing temperature up to 200°C.