BaTiO3 particles prepared by microwave-assisted hydrothermal reaction using titanium acylate precursors

Experimental variables taken into account were the reaction type (reflux and autoclave), the reaction time and the Ba to Ti ratio in sol solutions. Autoclave reactions were more effective than reflux reactions in terms of time and barium utilisation efficiency. In both types of reaction, the variation in Ba to Ti ratio in sol solutions led to substantial changes in particle morphology as well as Ba:Ti stoichiometry in resulting particles. Mechanisms for those changes are proposed. Characterisation of synthesised particles were performed via SEM, XRD, Raman, XPS and elemental analysis based on ICP. 15 refs.