Effect of ph on crystal structure optical property and solid state parameter analysis of amino acid doped nlo crystals

Abstract

Crystals are solids consisting of an ordered array of atoms or molecules arranged in a regular repetitive manner in three dimensions. They are the basic elements of modern electronics and technology. In the recent years, crystal growth pervades all aspects of solid-state materials chemistry and the industries that rely upon the functionality of these materials. In the drive toward greener, more efficient processes crystal engineering is an increasingly important requirement in materials such as catalysts, semiconductors, pharmaceuticals, gas-storage materials, opto-electronic crystals, and radio-active waste storage materials. In order to impart this desired functionality it is crucial to control properties such as crystal perfection, crystal size, habit, intergrowths, chirality, and synthesis cost. Based on this scientific thought, research was carried out to explore new materials and to grow single crystals of enhanced nonlinear optical properties. The thesis consists of seven chapters describing the crystal growth methods, materials selection and modification, growth of organic single crystals by changing its pH value, characterization studies and their physical implications and also study the theoretical parameter analysis. The first chapter deal with the basic theory of crystal growth and crystal growth parameters such as solubility, saturation, supersaturation, nucleation phenomena and metastable zone width described. The second chapter describes the importance of crystals as optical material, theoretical explanation of nonlinear optics, various types of nonlinear effect, second harmonic generation, nonlinear optical materials, development of nonlinear optical materials, and classification of nonlinear materials. This chapter concludes with the summary and scope of the investigation. newline