화학공학소재연구정보센터
Journal of Crystal Growth, Vol.506, 122-126, 2019
Growth and Characterization of L-Alanine Potassium Nitrate Single Crystals for Nonlinear Optical Applications
In this present work, we have successfully grown L-Alanine Potassium Nitrate (LAPN) single crystals from aqueous solution by spontaneous nucleation solution growth method. The crystal structure and lattice parameters of the unit cell of the grown LAPN single crystals have been determined using single crystal X-ray diffraction (SXRD) and powder X-ray diffraction (PXRD) techniques. The functional groups present in the grown crystals have been confirmed by means of Fourier Transform Infrared (FT-IR) analysis. Elemental analysis CHN was performed to confirm the inclusion of potassium nitrate into the crystal lattice of L-Alanine. The UV-Vis-NIR study has been carried out within 200-2500 nm to determine the optical transparency and the dielectric nature of the grown LAPN single crystal. Second Harmonic Generation (SHG) efficiency of the grown crystalline powdered sample was studied by Kurtz-Perry powder technique using a Nd: YAG laser, revealed increased SHG efficiency with the highest of about 1.25 limes in the presence of potassium nitrate compared to the standard potassium dihydrogen orthophosphate (KDP). The dielectric constant and dielectric loss of LAPN crystal was carried out as a function of frequency and the obtained results were discussed. The photoconductivity nature of the grown crystal was confirmed from photoconductivity analysis.