Capacitors Containing Nanocrystalline BaTiO3 as Dielectric

Capacitors in which the main dielectric layers are made from sintered nanocrystalline BaTiO3 have been fabricated and tested in an initially successful and continuing effort to increase energy densities, breakdown potentials, and insulation resistances beyond those of prior commercial capacitors that contain coarser-grained sintered BaTiO3. This development effort is based on the premise that the relevant physical properties of BaTiO3 grains vary with their sizes in such a way that smaller grains are better suited for use as dielectrics in capacitors.