Studies on physico-chemical properties of hydroxyethylammonium(L) tartrate monohydrate single crystals

In this paper, we report the growth and characterization of hydroxyethylammonium(L) tartrate monohydrate single crystals grown by slow evaporation solution technique.The X-ray diffraction analysis reveals that the crystal belongs to the monoclinic system having P21 space group. Photo- induced optica labsorption effects were studied on the crystalline samples irradiated with CW 532nm (green) and 689nm (red) laser wavelengths. The relative second harmonic generation efficiency of the title crystal was found to be 1.4 times larger than that of KDP crystal.The thermal, mechanical, dielectric and optical studies of the single crystals were carried out to propose the material for useful applications.The reflectance and refractive indices were also evaluated from optical transmission spectrum. Further the electronic excitation calculations were carried out to understand the charge transfer mechanisms.The author R. Nagalakshmi is thankful to the Council of Scientific and Industrial Research, New Delhi, for the financial assistance under major research project and N. Sudharsana is thankful to CSIR for awarding JRF in this project