Investigational studies of crystalline, optical, dielectric, thermal, mechanical, second besides third order nonlinear optical properties of urea itaconic acid solitary material
R.S. Priyadharshini, M. Saravanan Manickam
Abstract
In this research work, we used low temperature growth technique (Slow cooling method) for the growth of nonlinear optical and antimicrobial activity of fully-fledged organic Urea Itaconic acid (UITA) crystal. The model was crystallised with a monoclinic crystal structure in the centrosymmetric space group P21/c. The single crystal X-ray diffraction (SXRD) method was used to determine the crystal characteristics of the compounds. To validate the presence of separate functional groups, a Fourier transform infra-red test is utilised. The crystallinity and phase purity of the entire crystal is confirmed by the X-ray diffraction pattern of the detected Bragg peaks. The optical transmission window and shorter UITA wavelength cut-off were established using UV-Vis-NIR studies. Defects were also analysed by the dielectric loss, dielectric constant and AC conductivity studies. The mechanical stability of growing crystal was required to identify using Vickers microhardness analysis and by the Hays-Kendall approach, the effect of hole size (ISE) and the proportional stability model (PSRM) was adequately explained. Using energy dispersion spectrometry, the presence of urea and itaconic acid was confirmed. The differential thermal analysis (DTA) and thermogravimetric (TG) technique were studied by thermal effects of crystal. Using Z scan method the good third order nonlinear response for different planes (1 0 0), (0 0 1) and (1 1 − 1) of the UITA crystal sample were determined. Potentially threatening microbe’s activity utilised to analysis antimicrobial chattels. UITA sample were taken into the solubility and width of the metastable region. The good crystal perfection is showed that the grown crystals using by HRXRD and etching studies. Using on classical nucleation theory, the final nucleation constraints such as phase to phase strain, Gibbs free energy transformation, critical radius, molecular count in the critical nucleus and nucleation rate were calculated for the UITA sample. Second Order NLO behaviour of the grown crystals were confirmed by Kurtz powder procedure.