Dose Fe+2, Mn+2 or Co+2, Y+4 affect on the optical properties of Ba0.5Sr0.5TixM1-xO3 (BST) nanoparticles synthesized through oxalate procurs method
M. M. Rashad1*, A.O.Turky 1, A. T. Kandil2
1Central Metallurgical Research and Development Institute, P.O. Box: 87 Helwan, Cairo, Egypt
Faculty of Science, Helwan University, Helwan, Egypt
Barium strontium titanate (BST) Ba1-XSrXTiO3 nanopowders have been successfully synthesized through the oxalate precursor route. The effect of acceptor dopants such as Fe+2, Mn+2, Co+2, as a metal ion substitution on the optical properties a of BST was studied .The results revealed that well crystalline single tetragonal BST phase was formed at annealing temperature 1000oC for furthermore, addition of acceptor ions increased the crystallite size and unit cell volume of the produced BST phase. the microstructure of the produced pure BST phase appeared as a tetragonal like structure ,the optical properties of pure and metal doped BST was studied the band gap energy of the pure BST was 3.4 Ev. Hence, the band gap energy was increased to 4.1, 4.2, 3.8 Ev. as the result of substitution by Fe+2,Mn+2andCo+2 respectively.
Keywords: BST, the acceptor doping, donor doping, optical properties,