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Hardness, Non Linear Optical and Atomic Force Microscopy Analyses of Organometallic Single Crystal-Tri Allylthiourea Mercury Chloride (ATMC)
R. Josephine Usha, A.R. Baby Suganthi, F. Mary Anjalin and D. Anbuselvi

Nonlinear optical material tri allylthiourea mercury chloride (ATMC) single crystals are grown by the slow evaporation method. The grown crystals are characterized by single-crystal XRD analysis to confirm its structure. Nonlinear optical behavior was theoretically examined and Second Harmonic Generation (SHG) was experimentally confirmed by using Kurtz and Perry powder technique. The optical quality and band gap energy were analyzed by UV-Vis-NIR measurement. The grown crystal has good optical transparency within the visible and near IR regions. The nonlinear refractive index (n2), absorption coefficient (β), and third-order nonlinear susceptibility (χ(3)) were obtained using the Z-scan technique with Nd: YAG laser of 532 nm. The surface morphology analyses of ATMC single crystals were discussed with FESEM and AFM techniques.

Keywords: XRD, Z-Scan, FESEM, AFM, Surface morphology