Several ceramic materials with a perovskite structure often exhibit interesting electronic
properties and, therefore, are often called “electroceramics”. Electroceramics with high dielectric
constants are used in capacitors and superconductors. The effect on calcination temperatures
(1000°C–1400°C) and the changing of ions in A and B sites on the phase formation and
microstructure of barium strontium zirconate (Ba1-xSrxZr)O3, BSZ, x = 0.2 and 0.4 ceramics were
investigated. The BSZ powders were prepared using the solid state reaction method. The phase
purity, crystal structure and microstructure of samples were examined using Fourier transform
infrared spectroscopy (FTIR), X-ray diffraction (XRD). We found out that the percentage phase
purity of perovskite increases with an increase in the calcination temperatures as expected and it
was found that BSZ powders adopts a perovskite structure with a cubic ( Pm3m) unit cell as well.
The purity of perovskite powders was obtained above 1300°C and the purity phase of ceramics was
detected in all samples.
Keywords: barium strontium zirconate, cubic perovskite, microstructure, X-ray crystallography.