Crystal growth and impact a Bisthiourea on structural, optical, thermal and mechanical behavior of Potassium sulphato oxalate – a novel semi organic nonlinear optical material

R. Manimekalai¹ , R. Punniyamoorthy² , S. Chidambaram³ , G. Pasupathi⁴

Section:Research Paper, Product Type: Isroset-Journal
Vol.6 , Issue.5 , pp.41-47, Oct-2018

CrossRef-DOI:   https://doi.org/10.26438/ijsrpas/v6i5.4147

Online published on Oct 31, 2018

Copyright © R. Manimekalai, R. Punniyamoorthy, S. Chidambaram, G. Pasupathi . This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
 

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Abstract :
Semiorganic nonlinear optical single crystals of Bisthiourea potassium sulphato Oxalate (BTKSO) are successfully grown by slow solvent evaporation technique at ambient temperature. The structural property of grown BTKSO crystal was determined by single crystal X-Ray diffractometer. It reveals the triclinic structure with the space group of P1, and the lattice parameters are a = 9.4 ± 0.5Ǻ, b = 10.1 ± 0.5Ǻ, c = 15.7 ± 0.8Ǻ, V = 1400 ± 200Ǻ3. Fourier transform infrared (FTIR) studies substantiate the functional groups of the present crystal and the presence of elements was confirmed by employing energy dispersive spectroscopic technique. The optical behavior and transparency nature of BTKSO crystal were studied by UV-Vis-NIR spectra. The Kurtz powder technique is used to ascertain the nonlinear optical behavior of the grown crystal. Its second harmonic conversion efficiency (SHG) is found to be 1.31 times higher than that of reference potassium dihydrogen phosphate (KDP) material. The photoluminescence spectrum of the title crystal shows the strong green emission at 573 nm. The thermal and mechanical behaviors of the grown crystal were studied by thermo gravimetric and differential thermal analyzer (TG/DTA) and Vicker’s hardness test respectively.

Key-Words / Index Term :
Crystal growth, single XRD, optical studies, luminescene, Thermal analysis, SHG measurment

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