CRYSTAL-GROWTH AND CHARACTERIZATION OF KTIOPO(4) ISOMORPHS FROM THE SELF-FLUXES

We report the crystal growth of KTiOPO4 (KTP) and its isomorphs from t he self-fluxes. Common features in the crystal growth properties of MT iOXO4 within the M2O-TiO2-X2O5 ternary, where M = {K, Rb or Cs} and X = {P or As (for M = Cs only)}, are noted. The solubility of these crys tals in the M5X3O10 and M6X4O13 fluxes are presented. A previously unr eported (001BAR) growth face was observed in KTiOAsO4 (KTA) and the mo rphological stability of this face in KTP is also discussed. Optimizat ion of the crystal growth parameters allows us to grow inclusion-free crystals of up to 18 x 35 x 35 mm3 from 250 ml charges. We discuss the domain characteristics of these crystals and present the optical, ele ctro-optical and dielectric properties of these materials.