Abstract
Single crystals of organic non-linear optical material, γ-glycine have been grown by gel method for the first time. The γ-phase is confirmed by single crystal XRD. The presence of various functional groups of γ-glycine are confirmed by FTIR. The UV-Vis-NIR spectrum reveals the high percentage of transmission of the sample in the entire visible region. The SHG of γ-glycine is confirmed by Kurtz powder technique. TGA-DTA studies indicate that the crystal is structurally stable upto 170 °C. Microhardness investigations are conducted on the grown crystals. The dielectric constant measurements are carried out and the nature of variation of dielectric constant ε′ and dielectric loss D in the frequency range of 50 Hz to 5 MHz is studied and reported. Photoconductivity studies of γ-glycine crystals revealed the negative photoconducting nature. (© 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)
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