CRYSTALLIZATION AND MULTIFACETED CHARACTERIZATION OF L-ASPARAGINE MONOHYDRATE SINGLE CRYSTALS FOR STRUCTURAL, SPECTROSCOPIC, OPTICAL, THERMAL AND MORPHOLOGICAL ANALYSIS TOWARD FOR THIRD-ORDER NLO APPLICATIONS

Abstract

L-Asparagine monohydrate (LAM) is grown by solution growth method is nucleation by the slow evapouration technique. Grown crystal has characterized by the various studies they are Powder XRD, FTIR, UV-vis, EDAX, CHN, Photoluminescence, 1H&13C FT-NMR, TG-DTA, SEM, LDT and Z scan. Powder XRD used to identify the Space group, Lattice parameters and crystal structure. X pert high score is the research tool which help to find the FWHM, Crystalline size and strain(ղ). FTIR is mainly identify the functional group of various assignments and Functional groups. DTA was used to study the thermal behaviour of the material, which provides insights into the stability and decomposition behaviour of the crystal under varying temperatures, including the determination of the glass transition temperature (TG). The thermal kinetic parameters such as Entropy  j/mol.k, Enthalpy  j/mol and Gibbs free energy  j/mol is the technique which is used to find the Broidos method. In UV-Vis the optical property of the LAM compound which are find out the Transmittance (%), Linear Band gap (E_g) and Refractive index (n_o).The Z scan technique is generally helps for Third harmonic generation of Nonlinear absorption coefficient (β), Nonlinear refractive index (n2) and Third order susceptibility X ⁽³⁾.The LAM sample had the different elements of carbon, nitrogen, and oxygen, according to EDAX. Elemental analysis verifies the chemical makeup of growing samples. A Prominent peak in the Fluorescence spectrum, recorded from 200-800 nm, was seen at 467 nm. The LDT was experimentally determined as 24.8 GW/cm² . The FT-NMR method verified the molecular structure. The SEM image was captured the particle and minutes crack. SEM Reveals the information about growth quality and defect level.