Single crystals of pure and strontium doped Tri Ammonium Fluoro Di Antimonates (NH4)3Sb2F9 ,an electro optic crystal were grown by slow evaporation technique. The grown crystals were subjected to various studies such as single crystal X-ray diffraction (XRD), UV-Vis studies, Fourier Transform Infrared (FTIR) ,TG-DTA ,Vickers’s Micro hardness , DC Conductivity of the grown crystals were also measured. Single crystal X-ray diffraction studies reveals both the crystals belongs to orthorhombic crystallographic system. Microhardness studies reveals the incorporation of SrF2 makes the crystal more softer than that of the pure(NH4)3Sb2F9 crystals. The details are presented and discussed in this paper.
