Growth and Characterization of Pure and Phosphoric Acid Doped Triglycine Sulfate Crystal by the S-R Method

In the present work, triglycine sulfate (TGS) and phosphorus-doped TGS (TGSP) crystals were grown from an aqueous solution by a new technique called the S-R method. XRD spectra of the grown crystals were used to determine their crystal parameters. Optical transmission of the TGSP crystal was found to be higher than that of the TGS crystal. Fourier transform infrared spectroscopy (FTIR) studies of the grown crystals confirmed the functional groups present in the samples. Raman spectroscopy was employed to investigate the presence of phosphate ions in the grown TGSP crystal. Hardness d etermination of the crystals revealed a lower value for TGSP compared to TGS. Surface etching of the crystals were carried out, and the etch pits appearing on the TGSP crystal surface were found to be deeper and larger than those appearing on the TGS crystal surface.