Mechanical activation, without any additional heat treatment, is used to tr
igger the formation of a perovskite BaTiO3 phase in an oxide matrix that co
nsists of BaO and TiO2 in a nitrogen atmosphere. The resulting BaTiO3 powde
r exhibits a well-established nanocrystalline structure, as indicated by ph
ase analysis using X-ray diffractometry. A crystallite size of similar to 1
4 nm is calculated, based on the half-width of the BaTiO3 (110) peak, using
the Scherrer equation, and an average particle size of 20-30 mm is observe
d using transmission electron microscopy for the activation derived BaTiO3
powder.