Abstract

Single crystals of l-histidine hydrofluoride dihydrate (LHHF), a semiorganic nonlinear optical (NLO) material have been successfully grown by slow evaporation technique. The crystals were characterized by X-ray diffractometry (XRD), Fourier transform infrared (FTIR), UV-Vis-NIR, TGA, DTA, microhardness and solubility studies. The SHG efficiency of LHHF was found to be higher than that of KDP. The dielectric constant and dielectric loss of the crystal was studied as a function of frequency and the results are discussed. Photoconductivity studies carried out on the sample revealed its positive photoconductivity nature.

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