Growth and Characterization of Guanidinium Trifluoroacetate – Second Harmonic Generation from a Centrosymmetric Crystal

M. Loganayaki, V. Siva Shankar, P. Ramesh, M.N. Ponnuswamy, P. Murugakoothan

Centre of Advanced Study in Crystallography and Biophysics, University of Madras, Guindy Campus, Chennai 600 025, India.
Department of Physics, SRM University, Ramapuram, Chennai-600 089, India.
Postgraduate & Research Department of Physics, Pachaiyappa’s College,Chennai – 600 030, India.

DOI: 10.4236/jmmce.2011.109065                

Abstract

Guanidinium trifluoroacetate (GTFA), a semi-organic non-linear optical material with molecular formula C₃H₆F₃N₃O₂, has been synthesized at ambient temperature. Second harmonic generation (SHG) efficiency has been observed in this crystal though it crystallizes in centrosymmetric space group. Bulk single crystal of GTFA with a size of 22 x 7 x 2mm³ is successfully grown by submerged seed solution method. The grown crystals of GTFA have been subjected to various characterization studies such as X-ray diffraction, CHNS, FTIR analysis, UV-Vis spectrum, TGA/DTA, powder SHG test, laser damage threshold and microhardness studies.

Keywords

Growth from solutions, X-ray diffraction, Ultraviolet spectra, Nonlinear optical crystals, TGA/DTA

Conflicts of Interest

The authors declare no conflicts of interest.

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