Synthesis Growth and Characterization of a Novel Non-Linear Optical Crystal: Cadmium Mercury Thiocyanate Dimethylsulphoxide

Abstract

Abstract: Single crystals of cadmium mercury tetrathiocyanate dimethylsulphoxide [CdHg(SCN)4(H6C2OS)2],CMTD was conveniently grown from a DMSO-water mixed solvent by slow evaporation technique. The good quality single crystal has been harvested in a period of 40-45 days. Different characterization studies have been carried out for finding its suitability in device fabrications. The lattice parameters of the crystal have been studied by single crystal X-ray diffraction analysis and the crystal system was identified as Orthorhombic. The Fourier transform infrared spectrum of CMTD has been recorded in the region 450-4000 cm-1 to identify the presence of functional groups. The optical studies have been carried out and it was found that the tendency of transmission observed from the specimen with respect to the wavelength of light is practically more suitable for opto-electronic applications. The photoconductivity studies confirm that the title compound has negative photoconducting nature. The relative second harmonic generation efficiency of the crystal has been tested by Kurtz-Perry powder technique.