Abstract
Strontium and barium titanates were obtained at room temperature and 60° C, respectively, by the gel method. Factors affecting the formation of the titanates, such as the nature of the reactants, temperature, pH and time were studied. It is shown that the mechanism of formation occurs through diffusion of alkaline earth cations inside the titanium dioxide (TiO2) gel particles. Thus, particle size and shape of the titanates can be controlled by determining the TiO2 gel characteristics. This is illustrated by synthesizing the titanates with spherical submicron monosized particles.
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