Research on the dielectric and ferroelctric characteristics of (Pb_1−xSr_x)TiO₃ceramics

Abstract Varied with the component proportion of PbTiO3 and SrTiO3, and doped with 0.25 wt% MnO2, 1.0 wt% ZnO, 0.1–0.3 wt%La2O3, the (Pb1−xSrx) TiO3 (PST) ferroelectric ceramics were prepared. The temperature coefficient of the PST ceramic reached 4.8 %/°C at Curie temperature Te. The dielectric loss can be less than 1.0%. The spontaneous polarization intensity Ps was in 10−2C/m2 order and the pyroelectric coefficient attained 10−3C/m2.K order. Obviously, both the dielectric and the ferroelectric properties of the fabricated (Pb1−xSrx)TiO3 materials were excellent.