Structural Studies of ZnXMg(1-X)TS Mixed Crystals
Abstract – Search of New NLO material is a fascinating field of research today. In this view, in the present study mixed crystals of ?????(?−?)?? for various values of x viz 0, 0.1, 0.2, 0.4, 0.6, 0.8, 0.9 and 1 were grown by slow evaporation techniques. The density of the grown crystals were determined by floatation technique and composition was estimated from the measured density. The grown crystals were characterized by SXRD and PXRD. The lattice constants also been determined. The grown crystals are single crystals and they crystallize in to different structures like orthorhombic, tetragonal and hexagonal.
Key words — ZMTS, Crystal growth, Density, Lattice parameter.
- INTRODUCTION on-linear optical (NLO) materials have become a focus of current research in view of their potential applications in various photonic technologies [1-3]. Materials with NLO activity find use as electro-optic switching elements for telecommunication and optical information processing. Variety of materials including inorganic, organometallic, organic and polymeric have been studied for their NLO activity, but it is the organometallic materials which have been receiving the maximum attention due to its high mechanical strength and high SHG efficiency. Mixed crystals generally have enhanced properties than the pure crystals. In this view, in the present investigation mixed crystals of ZnxMg(1-x)TS (ZMTS) were grown and characterized by measuring density and XRD pattern. II. MATERIALS AND METHODS The ZMTS salt was synthesized by the stoichiometric mixing of AR grade Zinc SulphateHeptahydrate, Magnesium SulphateHeptahydrate, and Thiourea in the molar ratio 1:3. The component salts were well dissolved in deionized water which was thoroughly mixed using a Magnetic stirrer and the mixture was heated at 50℃. ZMTS salt was synthesized according to the reaction.
?????(1−?)??4 . 7?2? + 3??(??2)2®?????(1−?) [(??(??2)2)3 ]??4
Where? = 0, 0.1, 0.2, 0.4, 0.6, 0.8, 0.9 ??? 1
Single crystals of ZMTS was grown by slow evaporation technique at room temperature. Totally 8 crystals were grown. All the grown crystals were subjected to single crystal XRD analysis using Nonius CAD4/MAC H3 and BrukerKapper Apex II single crystal diffactometer to determine the unit cell dimensions (saif / Cochin).