CRYSTAL-GROWTH AND PHYSICAL CHARACTERIZATION OF THE SEMIORGANIC BIS(THIOUREA) CADMIUM CHLORIDE

Single crystals of bis(thiourea) cadmium chloride (BTCC), a novel semi organic nonlinear optical material, were grown from aqueous solutions. The grown crystals were characterized by recording the powder X-ray d iffraction pattern and by identifying the diffracting planes. BTCC has a transmission that extends from 285 to 1900 nm. Differential thermal analysis carried out on BTCC indicates that the material does not sub lime before it melts at 215 degrees C. The grown crystals were estimat ed to have a moderate defect density. The mechanical hardness of BTCC was evaluated in the (0 1 0) plane.