Morphotropic phase boundary in Pb (Mg13Nb23) O3-PbTiO3 system

Abstract Dielectric and pyroelectric properties in the solid solution (1 −x) Pb (Mg 1 3 Nb 1 3 ) O 3 : xPbTiO 3 across the morphotropic phase boundary compositions, x = 0.275–0.4, are studied as a function of temperature. The studies revealed that the true morphotropic boundary is in the vicinity of x≈ 0.3 and it has a small curvature.