Materials Chemistry and Physics, Vol.127, No.1-2, 102-106, 2011
Characterization of BaBi2Ta2O9 prepared through amorphous precursor
Formation of ferroelectric BaBi2Ta2O9 by annealing of an amorphous precursor prepared by high energy milling in ball mill has been studied by X-ray, scanning electron microscopy (SEM), Raman, infrared spectroscopy (IR), diffuse reflectivity and dielectric measurements. Our results show that formation of Bi-layered BaBi2Ta2O9 proceeds via an intermediate fluorite phase. Mechanochemical activation allows obtaining BaBi2Ta2O9 at short time and much lower temperatures than those required in a conventional solid state reaction. The lateral size of the plate-like crystallites is about 100-200 nm and properties of the synthesized particles are different compared to the bulk material. (C) 2011 Elsevier B.V. All rights reserved.
Keywords:Inorganic compounds;Nanostructures;Raman spectroscopy and scattering;Infrared spectroscopy (IR)