Author(s)

T. Uma Devi, N. Lawrence, R. Rameshbabu, S. Selvanayagam, Helen Stoeckli-Evans, G. Bhagavannarayana, K. Ramamurthi

Department of Physics, Government Arts College for Women, Pudukkottai –622001, India..
Department of Physics, Kalasalingam University, Krishnan Koil - 626 190.
Department of Physics, St.Joseph’s College, Tiruchirappalli –620002, India..
Institute of Physics, University of Neuchatel, Neuchatel, India.
Materials Characterization Division, National Physical Laboratory, New Delhi-110 012, India.
School of Physics, Bharathidasan University, Tiruchirappalli –620024, India..

L-Cystine dihydrochloride, a semiorganic nonlinear optical material, was synthesized and a single crystal was grown from aqueous solution. Low temperature (173 K) crystal structure measurement was carried out, and it reveals that the crystal belongs to noncentro symmetric space group C2. The structural perfection of the grown crystal was analyzed by high-resolution X-ray diffraction (HRXRD) rocking curve measurements. Fourier transform infrared (FTIR) spectroscopic studies were also performed for the identification of different vibrational modes of the fundamental groups present in the compound. The UV–vis transmission spectrum was recorded in the range 200–1000 nm. The second harmonic conversion efficiency was determined using the Kurtz powder technique; which is 0.35 times that of KDP. Thermal properties of LCystine Dihydrochloride were studied by TGA and DTA.

crystal structure, amino-acid, coordination compounds, thermal properties

T. Devi, N. Lawrence, R. Rameshbabu, S. Selvanayagam, H. Stoeckli-Evans, G. Bhagavannarayana and K. Ramamurthi, "Synthesis, Crystal Growth, Structural, Optical, Thermal and Mechanical Properties of Semiorganic Nonlinear Optical Material: L-Cystine Dihydrochloride," Journal of Minerals and Materials Characterization and Engineering, Vol. 9 No. 5, 2010, pp. 495-507. doi: 10.4236/jmmce.2010.95035.