SURFACE MORPHOLOGY, ETCHING AND MECHANICAL STRENGTH OF A SEMIORGANIC NONLINEAR OPTICAL CRYSTAL THIOUREA CADMIUM-ZINC SULPHATE (CZTS)

Thiourea cadmium-zinc sulphate (CZTS), a semi-organic nonlinear optical material has been grown from solution by slow evaporation technique. Solubility of the synthesized material has been determined for various temperatures using water as solvent. Single crystal X-ray diffraction studies confirm that the grown crystal belongs to the triclinic system. The surface morphology and facets of the as-grown crystal were studied by contact goniometry. Functional groups present in the sample were identified by FTIR spectral analysis. Microhardness and etching studies have been carried out on the grown crystals. The SHG relative efficiency of thiourea cadmium-zinc sulphate crystal was found to be 1.8 times higher than that of KDP.Semi-organic material, solution growth, X-ray diffraction, nonlinear optical material

GROWTH AND CHARACTERIZATION OF A NEW SEMI-ORGANIC NON-LINEAR OPTICAL CRYSTAL L-ARGININE HYDROCHLOROFLUORIDE MONOHYDRATE (LAHClF)

A new non-linear optical mixed crystal of L-arginine hydrochlorofluoride monohydrate (LAHClF) has been grown by temperature lowering solution growth technique. The single crystal X-ray diffraction studies show that the LAHClF belongs to monoclinic crystal system. The optical transmittance of the crystal was studied by UV–Visible–NIR spectroscopy. Fourier transform infrared spectroscopy and thermal analysis were performed to study the molecular vibrations and thermal behavior of the crystals, respectively. The second harmonic generation intensity and laser damage threshold of the LAHClF crystal were measured. The mechanical strength of the material was determined by the Vickers hardness method.NLO crystal, LAHClF, Vickers hardness, SHG intensity