Crystal Growth and Electrical Properties of Lead Scandium Niobate-Lead Titanate Binary Single Crystals

概要

論文の詳細を見る
Single crystal preparations of the Pb[(Sc_<1/2>Nb_<1/2>)_<1-X>Ti_X]O_3 binary system have been investigated by a flux method using 75 mol%PbO-25 mol%B_2O_3 flux. The crystals were grown in a platinum crucible by mass crystallization, achieved by slow-cooling the solution at 1℃/h from 1,200℃ to 880℃. 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℃. The crystal has a remnant polarization P_r=26μC/cm^2, a coercive field E_c=6 kv/cm, a room temperature dielectric constant after poling ε_<33>^τ/ε_0=960, a dielectric loss of 0.5%, and an electromechanical coupling factor k_<33>=72%.
社団法人応用物理学会の論文
1997-09-30