Effects of Calcining and Sintering Temperatures on the Pyroelectric Properties of Ba0.8Sr0.2TiO3Ceramics

Ba0.8Sr0.2TiO3 ceramics were prepared by the conventional solid-state reaction method. The effects of different calcining and sintering temperatures on pyroelectric properties of the ceramics were investigated. The TG-DTG test was used to determine the calcining temperature. The XRD results showed that all samples were perfect perovskite structure. SEM results exhibited a homogeneous grain dimensions distribution and dense microsructure in the samples prepared for optimum process condition. The dielectric constant and dielectric loss of Ba0.8Sr0.2TiO3 ceramics are 1681 and 0.0067 at 100 kHz in room temperature, respectively. The pyroelectric coefficient is 4542 μC·m−2·K−1. The mean detection rate (FD) reached 1.42 × 10−4 m3/2·J−1·F−1/2.