Low temperature sintering properties of Y-doped BaTiO3 ceramics by BaB2O4 sintering aid

The sintering process of semiconducting Y-doped BaTiO3 ceramics added with BaB2O4 as low temperature sintering aid were investigated. When the low temperature sintering aid BaB2O4 added Y-doped BaTiO3 ceramics prepared by Sol–Gel method, the sintering temperature of BaTiO3-based ceramics would be greatly decreased, and also widen sintering range. Y-doped BaTiO3 ceramics with BaB2O4 addition can be obtained at 1050 °C. Ceramics samples with room temperature resistivity 60–80 Ω cm, ratio of the maximum resistivity to minimum resistance (Rmax/Rmin) 104 and temperature coefficient of resistivity (α) 10%/°C were obtained.