In depth study on growth aspects and characteristic properties of semiorganic nonlinear optical crystal: 4-Dimethylaminopyridine copper chloride

Abstract

In this work we observed second harmonic nonlinear optical property in the grown 4-Dimethylaminopyridine copper chloride (4DMAPC) crystal. 4DMAPC appreciable size semiorganic non-linear optical crystal was grown by slow evaporation solution growth technique and the crystal was subjected to various characterization studies to analysis their structural, optical, electrical and mechanical properties. Sharp peak pattern of 4DMAPC in powder XRD crystal confirms good crystalline nature. Single crystal XRD study gives the 4DMAPC crystal as a monoclinic system with cell parameter values, a = 12.02 Å, b = 12.55 Å and c = 14.54 Å. Functional groups and their various modes of vibration of 4DMAPC sample were identified from FTIR study. Linear optical study of 4DMAPC crystal shows good optical transparency in the entire UV-Visible-NIR region. Band gap energy of the crystal calculated from linear optical study and having the values about Eg = 4.1 eV. Dielectric values of dielectric constant and loss as a function of frequency with different temperatures were studied. Thermal analysis were carried out by TGA and DTA. Vickers microhardness study shows hardness number (Hv) again the increasing load. Energy dispersive X-Ray analysis (EDAX) confirms the metal and molecules of grown 4DMAPC crystal. Second harmonic generation (SHG) efficiency of 4DMAPC crystal is realized by Kurtz and Perry technique and compared with standard inorganic potassium dihydrogen phosphate (KDP). Keywords: Semiorganic NLO crystal, UV-Visible-NIR, Electrical properties, Thermal properties, Vickers hardness