Uniaxial growth of 〈1 0 0〉 zinc (tris) thiourea sulphate (ZTS) single crystal by Sankaranarayanan-Ramasamy (SR) method and its characterizations

► Unidirectional 〈1 0 0〉 directed non-linear optical zinc (tris) thiourea sulphate (ZTS) single crystal was grown by Sankaranarayanan-Ramasamy (SR) method ► The growth conditions have been optimized. The conventional and SR grown ZTS crystals were characterized using chemical etching, Vickers microhardness, optical transmittance, dielectric constant and loss analysis and the results were compared ► The present study indicates that the crystalline quality of the SR method grown ZTS crystal is good compared to conventional slow evaporation method grown crystal.