Crystal growth and electrical properties of lead scandium niobate lead titanate binary single crystals

Single crystal preparations of the Pb[(Sc1/2Nb1/2)(1-X)Ti-X]O-3 binary system have been investigated by a flux method using 75 mol%Pb0-25mol%B2O3 flux. The crystals were grown in a platinum crucible by mass crystallization, achieved by slow-cooling the solution at 1 degrees C/h from 1, 200 degrees C to 880 degrees C. The resulting crystals were 2-15 mm in length. Chemical analysis and X-ray studies revealed that the crystals are of the perovskite structure with x = 0.33 to 0.35, making them slightly different from the charged morphotropic phase boundary composition of x - 0.42. The (001) single crystal showed a dielectric constant peak of 60,000 at 206 degrees C. The crystal has a remnant polarization P-r = 26 mu C/cm(2), a coercive field E-c = 6kv/cm, a room temperature dielectric constant after poling epsilon(33)(tau)/epsilon(0) = 960, a dielectric loss of 0.5%, and an electromechanical coupling factor k(33) = 72%.