Dielectric and pyroelectric properties in the Pb(Mg_1/3Ta_2/3)O₃-PbTiO₃solid solution ceramics

Abstract

Abstract Dielectric and pyroelectric properties of relaxor ferroelectric (1−x)Pb(Mg1/3Ta2/3)O3xPbTiO3 solid solution series have been investigated. The dielectric constant and loss of poled and unpoled samples were measured. The pyroelectric coefficient and the spontaneous polarization were measured by the static Byer-Roundy method as a function of temperature. Anomalous dielectric and pyroelectric behaviors are observed at the composition x∼0.29–0.39 mole % PT content in the vicinity of the morphotropic phase boundary.