The present study aims at exploring the enhancing effects of maleic acid on the lithium sulphate monohydrate crystals grown by slow evaporation method. The powder XRD analysis confirm that the grown crystal belong to monoclinic structure with space group P2₁. The Fourier transform infrared spectroscopy study revealed the inclusion of the maleic acid into the crystal. The optical transmittance study was used to estimate the lower cut off frequency and optical band gap. The Vickers microhardness test was employed to find out the mechanical strength of the crystal.

Keywords: Solution Growth; Optical Analysis; NLO Properties;