Growth of knbo3 crystals and their appearance

334The doped KNbO₃ single crystals have been synthesized using flux method by taking K₂CO₃ and Nb₂O₅ in the molar ratio of 1:2:1 with an impurity of Al₂O₃ (25 and 50 mg). Slow heating and cooling techniques were adopted to get good quality single crystals. The good quality single crystals were obtained by this method. The size of the crystal is about 0.4-0.6 cm in length with very small thickness (i.e., 0.1-0.2 cm). The crystals are partially transparent which are suitable for optical properties. The color of the grown crystals is silver black. The crystals are irregular in shape and hard to cut. It has smooth cleavage. The details of growth technique will be given separately in another chapter. The study of characterization and their dielectric properties is under process.