నైరూప్య

Synthesis of Barium Titanate Powder Using Nano Sized Titania

K.R. Kambale, A.R. Kulkarni , N. Venkataramani

Barium titanate is a ceramic widely used in electronic industry because of its high dielectric constant and low tangent losses. The main objective of the research work was to synthesize barium titanate from micron sized barium carbonate and titanium oxide having different particle size (0.7 μm, 50-60 nm and 80-90 nm). The calcination temperature of barium titanate was 1150 ºC when micro sized barium carbonate and titanium oxide were used as starting materials. However, calcination temperature decreased to 900 and 950 ºC when micro sized barium carbonate and nano titanium oxide with particle size 50-60 nm and 80-90 nm were used respectively. Formation of phase pure tetragonal barium titanate powder was confirmed using x – ray diffraction (XRD) in each case. The morphology of the powders was studied using scanning electron microscopy (SEM). The particle size of barium titanate reduced from 0.7 μm to 0.5 μm when nano sized titania was used as starting material