Author(s)

T. Uma Devi, N. Lawrence, R. Ramesh Babu, K. Ramamurthi, G. Bhagavannarayana

Crystal Growth and Thin Film Laboratory, School of Physics, Bharathidasan University,Tiruchirappalli–620024 India.
Department of Physics, Cauvery College for Women, Tiruchirappalli –620018, India.
Department of Physics, St. Joseph’s College (Autonomous), Tiruchirappalli –620002, India.
Materials Characterization Division, National Physical Laboratory, Dr. K. S. Krishnan Marg, New Delhi-110 012, India.

L-valinium picrate, an organic material, was synthesized and grown by solution growth method. Cell parameters of the grown crystals were obtained from the single crystal X-ray diffraction analysis and the presence of functional groups was identified by FTIR study. The quality of the crystal was also examined by high-resolution X-ray diffraction study. Its optical properties were examined by UV-Vis-NIR analysis, which shows that the crystal is transparent between the wavelengths 400 and 1000 nm. Thermal analysis carried out for the L-valinium picrate exhibits a single sharp melting point at 269 °C. The Vicker’s microhardness values were measured for the grown crystal. Relative powder second harmonic generation efficiency tested by high intensity Nd: YAG laser as a source is about 60 times greater than that of potassium dihydrogen phosphate.

X-ray diffraction, Growth from solutions, Organic compounds, Non-linear optical materials

T. Devi, N. Lawrence, R. Babu, K. Ramamurthi and G. Bhagavannarayana, "Studies on L-valinium Picrate Single Crystal: A Promising NLO Crystal," Journal of Minerals and Materials Characterization and Engineering, Vol. 8 No. 5, 2009, pp. 393-403. doi: 10.4236/jmmce.2009.85035.