shows TEM photograph and XRD peaks of BaTiO3 powders. This nano powder was synthesized from thermal decomposition of the polymerized metalorganics of titanium isoproxide and barium carbonate. The primary particles were heavily agglomerated with a uniform distribution of particle sizes about 30 nm. This observed particle size is in good agreement with the estimation from the half-width of (1 1 0) plane according to Scherrer's equation [21]. Fig. 2 shows microstructure developments of silica-coated BaTiO3 powders at various levels. There was observed some discernible progress as the SiO2 content increased. The powder agglomeration decreased with increasing silica content. At 5.0 wt.% SiO2, the powder exhibits a uniform distribution without agglomeration. This disappearance of agglomeration could be due to the electrostatic repulsion between the coated silica layers on the surface of BaTiO3 particles.