Single Crystals of (PbxSr1-x) TiO3 Grown by Traveling Heater Method

A procedure is presented for growing single crystals of (Pb_xSr_1-x)TiO₃ by passing solvent zones through poly-crystalline rods of the same composition (THM). The solvent zone composition for homogeneous solid solution growth was chosen from the pseudoquaternary system 2PbO: 1B₂O₃-2SrO:1B₂O₃-PbTiO₃-SrTiO₃. Crystals with compositions throughout the complete range of PbTiO₃-SrTiOs solid solutions were grown. Emphasis was placed on crystal compositions near (Pb_0.25Sr_0.78) TiO₃ which have Curie temperatures just below room temperature. The dielectric constants, Curie temperatures, and optical properties of these single crystals are presented. Nonlinear dielectric and electrooptic behaviors are also demonstrated.