Abstract

Nucleation, Growth and structural studies of Non Linear Optical crystals - Potassium Thiourea Chloride (PTC)

Author(s): R. Ezhil Vizhi, R. Ashok Kumar, N. Vijayan, K. Sathiyanarayanan and D. Rajan Babu

In the recent past semiorganic nonlinear optical single crystals are getting more attention due to its inherent physical and chemical properties. The title compound of potassium thiourea chloride (PTC) is one of the potential semiorganic compounds and it was synthesized by conventional chemical reactions and then grown by slow cooling technique. The lattice dimensions and crystal system was identified from the single crystal X-ray diffraction technique and found that it crystallizes in orthorhombic crystal structure. The Fourier Transform Infrared analysis confirms the presence of functional groups in the synthesized compound. Solubility measurements have been performed at different temperatures and observed that it increases with temperature. Metastable zonewidth and induction period values have been determined in order to optimize the growth parameters. The Interfacial tension values were determined from induction period measurements and found that it is comparable with the theoretical values. Bulk size single crystal of potassium thiourea chloride was successfully grown by optimizing the above said growth parameters.

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