Effect of Co doping on the structural and physical properties of SrC4H4O6.3H2O and SrC4H4O6.4H2O crystals
Journal Title: International Journal of Modern Engineering Research (IJMER) - Year 2014, Vol 4, Issue 12
Abstract
Single crystals of strontium tartrate and cobalt doped strontium tartrate crystals were grown by the single diffusion gel growth technique. The growth conditions were optimized by varying the parameters such as pH, concentration of the gel, gel setting time and concentration of the reactants. Silica gel was used as the growth medium with test tubes as crystallization vessels. Crystals having different morphologies were obtained (transparent and few opaque). The grown crystals were characterized by carrying out PXRD, SXRD, FTIR spectral, UV-Vis-NIR spectral, SHG, PL spectral, AAS, microhardness and TG/DTA measurements. The tri hydrate crystals belong to the monoclinic crystal system and the tetra hydrate crystals belong to orthorhombic crystal system and are optically transparent, NLO active, mechanically soft and thermally stable up to 100 °C. AAS measurement revealed the presence of Co atoms in the doped crystals. Results indicate that Co-doping significantly increases SHG efficiency. Details are presented
Authors and Affiliations
T. Vijayakumari1 , C. M. Padma , C. K. Mahadevan
Keywords
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