Dielectric properties of Ba_1-xSr_xZrO₃(0 ≤ x ≤ 0.20)

Barium strontium zirconate Ba_1-xSr_xZrO₃ (0 ≤ x ≤ 0.20) ceramics were prepared by novel glycine - nitrate combustion synthesis. The as - synthesized powders were heat treated at 800°C for 6 h in order to get phase pure compounds. The crystal structure, microstructure and dielectric properties of the ceramics were investigated as a function of composition via X-ray diffraction (XRD) and scanning electron microscopy (SEM) respetively. The XRD patterns obtained on these powders showed the formation of pure cubic structure of barium strontium zirconate and all the compounds retained the cubic structure. The BET surface area of pure BZ heat treated powder is 2.35 m²g⁻¹ and strontium doped barium zirconate powders ranges from 2.6 to 3.8 m²g⁻¹. It has been observed that the dielectric constant and dielectric loss decreases with increase in strontium content (100 KHz)