Growth of LiNaSO4 single crystals from a solution of stoichiometric pH value

Single crystals of LiNaSO4 were grown without adjusting the pH value of equimolar aqueous solution containing Li2SO4·H2O and NaHSO4 at 30°C. As-grown crystals were characterized using X-ray, IR, Raman and other crystal perfection studies such as chemical etching, scanning electron micrograph and microhardness measurements. Atomic absorption technique was adopted to verify the composition of Li+ and Na+ ion content and these were found to be consistent with the desired composition to within ± 6 mol%.