γ-glycine (GG) was synthesized from α-glycine in an aqueous solution of strontium chloride. A solubility study of the synthesized GG sample was conducted at various temperatures ranging from 30 to 55 °C. The saturated solution of GG was prepared using solubility data, and single crystals of GG were grown over a period of three weeks by the slow evaporation method at room temperature. The grown GG crystals were characterized by single-crystal x-ray diffraction analysis, UV–visible transmittance studies, thermogravimetric/differential thermal analysis studies, dielectric studies and Fourier transform infrared studies. The mechanical behavior of the crystals was assessed by Vickers microhardness measurements. The second-harmonic generation efficiency of the sample was measured using a Nd:YAG laser and the value was observed to be larger than that of potassium dihydrogen orthophosphate (KDP).
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