Theoretical Investigation of Optical and Mechanical Properties of Sodium Hydrogen Succinate Single Crystal: a Third Order NLO Material

International audienceSodium hydrogen succinate (SHS), an alkali metallo-organic third order NLO single crystals were grown successfully using aqueous solution by slow evaporation technique at room temperature. Single crystal X-ray diffraction analysis reveals that the grown crystal belongs to monoclinic system with space group C2/c. The presence of sodium in the title compound was confirmed by ICP-OES analysis. The existence of proton and carbon peak in the material was detected using NMR analysis. Using optical absorption studies, the theoretical calculations such as refractive index, reflectance, electrical conductivity, electrical susceptibility and optical conductivity of SHS were determined. The mechanical properties like brittleness index, fracture toughness, yield strength and elastic stiffness coefficient were estimated using Vickers microhardness test. The ac, dc conductivity and activation energy of SHS were also found using dielectric studies at different temperatures. Introduction. The recent developments in the field of optoelectronics and photonics has made most of the researchers to identify novel materials with most efficient NLO features like second and third order harmonics as per their requirements on the hyperpolarizabilities of molecules [1]. At present large quantity of organic compounds has been materialized as a favorable third order NLO material with large optical susceptibilities, ultrafast response times and high optical threshold for laser power. Organic materials have huge range of remarkable properties and it is more superior to inorganic materials due to π conjugation between electron donor and acceptor groups, chirality and hydrogen bonding. The acceptor-donor groups are commonly attached to organic conjugated systems to produce NLO materials with large hyperpolarizabilities and to mold their transparency [2]