Ab-initio study of L-Tartaric Acid (LTA) single crystal for NLO application. (November 2015)

• Record Type: Journal Article
• Authors: Hasmuddin, Mohd.; Abdullah, M.M.; Singh, Preeti; Shkir, Mohd.; Vijayan, N.; Wahab, M.A
• Is Part Of: Optics & laser technology. Volume 74(2015)
• Page Start: 53
• Page End: 59
• Publication Date: 2015-11
• Subjects: Single crystal -- Optical properties -- Thermal analysis; Optics -- Periodicals; Lasers -- Periodicals; Electronic journals; 621.366
• DOI: 10.1016/j.optlastec.2015.05.013
• Languages: English
• ISSNs: 0030-3992

Abstract

Abstract: Single crystals of LTA were grown by slow evaporation solution technique (SEST). Powder X-ray diffractometry (PXRD) confirmed the monoclinic crystal structure, whereas the high resolution X-ray diffractometry (HRXRD) ascertained the good crystalline perfection (FWHM=25 arcsec) of the as-grown single crystal. Optical study demonstrated the high optical transparency (85%). Photoluminescence (PL) spectroscopy illustrated the PL-emission at λ =388 nm and optical band gap ~3.2 eV. The SHG efficiency of LTA single crystal (6.61) is comparatively greater than the referenced (KDP) single crystal (6.08). Thermal analysis revealed that the crystal is thermally stable up to ~170 °C. The calculated value of the activation energy (Δ E ) and corrected hardness ( H 0 ) for the crystal were found to be equal to 1.16 eV and 46.66 kg/mm 2, respectively. The as-grown LTA single crystals can be used as a potential candidate for NLO material as well as in electronic and optoelectronic devices. Highlights: A single crystal of good crystalline perfection (FWHM=25 arcsec). Comparatively higher SHG efficiency (6.61) confirms good NLO properties. Electrically, thermally and mechanically efficient for NLO devices.