Abstract
Barium titanate are widely used in multilayer ceramic capacitors, piezoelectric devices, electroluminescent panels, polymer matrix composites for integral passive devices and coating for shielding and electrostatic control. The permittivity value of Barium titanate was found depending on grain size and morphologies. In this work, we focused on the size and morphology control of Barium titanate particles by hydrothermal synthesis method using tetrabutyl titanate and barium acetate in NaOH solution at various starting Ba/Ti ratios and NaOH/Ba+Ti ratios. Effects of the excess barium and NaOH on crystallinity, particle size, morphology and the Ba/Ti atomic ratio of the prepared powder are discussed systematically.
