The Influence of Composition and Calcination Temperature on the Phases in (Ba_1-<i>_x</i>Sr<i>_x</i>Zr)O₃ Perovskites

Abstract

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 () 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.