The Effects of Sintering Temperature on The Dielectric Properties of Sr(Fe_(0.5)Nb_(0.5))O_3 Doped with Ba(Zr_(0.25)Ti_(0.75))O_3

摘要

In this work, ceramics of Sr(Fe_(0.5)Nb_(0.5)O_3) doped with Ba(Zr_(0.25)Ti_(0.75))O_3 (10 mol%), were synthesized by a solid-state reaction technique. The powders were calcined at 1300 °C for 12 hr and then sintered at 1400-1500 °C for 4 hr. Effects of sintering temperature on the properties of the ceramic were studied. Phase formation, microstructure, and dielectric properties were investigated. The ceramics exhibited a perovskite structure with cubic symmetry. Grain size of the ceramics increased with increasing the sintering temperature. The ceramics exhibited a dielectric relaxation like behavior with high dielectric constants over a wide temperature range.