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Growth, Dislocations and Hardness studies of a nonlinear Optical Crystal- Glycinium Oxalate

Author Affiliations

  • 13 Department of Physics, Kakatiya Institute of Technology and Science, Warangal, INDIA
  • 2 Department of Physics, PG Centre, Lal Bahadur College, Warangal, INDIA
  • 3 Department of Physics, Kakatiya University, Warangal, INDIA
  • 4 Department of Physics, SR Engineering College, Warangal, INDIA

Res. J. Physical Sci., Volume 1, Issue (8), Pages 1-5, September,4 (2013)


Single crystals of glycinium oxalate (GOX) were grown from aqueous solution by employing slow evaporation method at room temperature. Bulk crystals of good quality with dimensions 16 mm x 15mm x 4mm were grown by suitable growth conditions. The grown crystals were confirmed by X-ray diffraction studies and Fourier transform infrared spectra. Dislocation density of the grown samples was estimated using chemical etching technique. The UV-Vis transmittance spectrum indicates that the material has wide optical transparency (62%) in the entire visible region. The Kurtz powder test indicates the second harmonic generation efficiency of GOX is 75% that of KDP crystal. The mechanical strength of these crystals has been studied by using Vicker’s microhardness tester. The load independent hardness value is 42 kg/mm2


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