Properties of Barium Strontium Titanate (Ba_(1-x)Sr_xTiO3, 0 x 1) Ceramics Prepared by Hydrothermal Process

摘要

n strontium titanate (Ba_(1-x)Sr_xTiO3, 0 < x < 1) was produced in a pressure vessel at 180 °C for 24 h using a facile hydrothermal tec hnique, without any surfactants or templates, with an alkalescency solution. The as-prepared products were characterized by X-ray ditfraction, transmission electron microscopy, the differential thermal analysis and thermo-gravimetry analysis and electron diffraction. The barium strontium titanate nanoparticles in various compositions were monodispersed without mutual aggregation and their average were in the range of 50-80 nm. Furthermore, they showed highly crystallized perovskite phase over the whole composition range.