Structure and Pyroelectric Properties of PbTiO_3 Glass-Ceramics by Sol-Gel Process

PbTiO3-SiO2-B2O3 glass-ceramics were prepared by the sol-gel process. DTA and Xray diffraction analysis show that the crystallization temperature of PbTiO3 glass-ceramics is higher than that of PbTiO3 ceramics. As the glass content increasing, their pyroelectric coefficients are increased, and the pyroelectric coefficients are increased with the increase of sintering temperatures. The temperature dependence of the dielectric constant of PbTiO3 ceramics and PbTiO3 glassceramics is different obviously.