N. , Sivakumar and Kanagathara, N. and Varghese, B. and Bhagavannarayana, G. and Gunasekaran, S. and Anbalagan, G. (2014) Structure, crystal growth, optical and mechanical studies of poly bis (thiourea) silver (I) nitrate single crystal: A new semi organic NLO material. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 118. pp. 603-613. ISSN 1386-1425

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A new semi organic non linear optical polymeric crystal, bis (thiourea) silver (I) nitrate (TuAgN) with dimension 8 x 7 x 1.5 mm(3) has been successfully grown from aqueous solution by slow evaporation solution technique. Single crystal X-ray diffraction study reveals that the crystal belongs to orthorhombic system with non centrosymmetric space group C2221. The crystalline perfection of the crystal was analyzed by high resolution X-ray diffraction (HRXRD) rocking curve measurements. Functional groups present in the crystal were analyzed qualitatively by infrared and Confocal Raman spectral analysis. Effects due to coordination of thiourea with metal ions were also discussed. Optical absorption study on TuAgN crystal shows the minimum absorption in the entire UV-Vis region and the lower cut off wavelength of TuAgN is found to be 318 nm. Thermal analysis shows that the material is thermally stable up to 180 degrees C. The mechanical strength and its parameters of the grown crystal were estimated by Vicker's microhardness test. The second harmonic generation (SHG) efficiency of the crystal was measured by Kurtz's powder technique infers that the crystal has nonlinear optical (NLO) efficiency 0.85 times that of KDP.

Item Type: Article
Additional Information: Copyright for this article belongs to M/S Elsevier.
Uncontrolled Keywords: Crystal structure Crystal growth Microhardness Optical property Thermal analysis Nonlinear optical material
Subjects: Biochemistry & Molecular Biology
Depositing User: Dr. Rajpal Walke
Date Deposited: 09 Nov 2015 11:15
Last Modified: 09 Nov 2015 11:15
URI: http://npl.csircentral.net/id/eprint/1557

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