GROWTH AND CHARACTERIZATION L - ALANINE POTASSIUM CHLORIDE CRYSTAL

Abstract

Single crystal of alanine potassium chloride (APC), a semi organic nonlinear optical material hasbeen grown from solution by slow evaporation at ambient temperature. The isoelectric point ofL-alanine is 6(1). So, the growth of crystals has been carried out at pH 6. The chemicalcomposition of the grown crystals was determined by the FTIR spectra. The crystalline natureand its various planes of reflections were observed by the powder XRD. The structure is builtfrom alternate layers of alanine organic molecules and inorganic layers consisting of K+ ions andCl- ions. The Hardness of the crystals was studied by Vickers micro hardness tester. Surfacemorphology was studied by SEM analysis. Using Nd-YAG laser the NLO property of the crystalis studied.The transmittance and absorption of the crystal was studied by UV-Visiblespectrometer.