Studies on nucleation kinetics growth characterization and irradiation Effects of meta nitroaniline Benzimidazole n bromosuccinimide And benzil single crystals

Abstract

newlineFrequency conversion is an important and popular technique for newlineextending the useful wavelength of lasers Eimerl et al 1989 Materials with newlinehigh non linear optical NLO susceptibility are of great interest In the newlinepresent study investigations on the nucleation kinetics growth and irradiation newlineeffects on non linear optical crystals have been made The first chapter deals newlinewith the fundamentals of crystal growth techniques working principle and newlinerequirements of solution and vertical Bridgman methods a brief introduction newlineto the non linear optics second and third harmonic generation and irradiation newlinemethodology The second chapter presents the experimental details and results on newlinethe growth of m Nitroaniline m NA by solution growth technique and newlineVertical Bridgman technique VBT The m NA crystallizes in the newlineorthorhombic crystal structure with space group Pbc2 In order to optimize the newlinegrowth parameters for the growth of bulk crystals the solubility metastable newlinezonewidth induction period the critical radius and the number of newlinemolecules in the critical nucleus have been determined Kanagasekaran newlineet al 2005 The phase structure and the functional groups were confirmed newlineby the powder X ray diffraction and Fourier transform infrared studies The newlinehardness behaviour of m NA crystals were analyzed by using the Vicker s newlinemicrohardness tester and it was found that the crystal is moderately harder newline