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A Study on the Growth of Pure and Zinc Sulphate Mono Hydrate Doped Glycine NLO Single Crystals and their Properties

P. Sagunthala, V. Veeravazhuthi, P. Yasotha and P. Hemalatha

Single crystals of glycine, zinc sulphate monohydrate and zinc sulphate monohydrate doped glycine (ZSG) had been grown by slow evaporation technique at room temperature. The grown crystals had been subjected to different characterization studies to find its suitable applications. The crystalline nature of the grown compounds was confirmed by the powder X- ray diffraction (XRD) analysis. Single crystal XRD confirmed the structure of the doped crystal as monoclinic. UV-Vis transmittance study proved the enhancement of optical behaviour of the ZSG crystal. The FTIR spectrum had been recorded in the region 4000-400 cm-1 to identify the presence of functional groups. Thermo gravimetric analysis (TGA) helped to determine the upper limit of temperature up to which the grown crystals are thermally stable. The grown crystals were subjected to Vicker’s Micro hardness analysis to ascertain their mechanical properties.