Patent ID: 6060735
Filing Date: 2000-05-09
Classification: H01L

Abstract:
A thin film dielectric device, comprising:a substrate having a capacitor surface;a lower electrode formed on said substrate and composed of a polycrystalline film having columnar grains that have grown in a vertical to a capacitor surface of said substrate;a dielectric thin film formed on said lower electrode and composed of a perovskite oxide, said dielectric thin film being a polycrystalline film having columnar grains that have successively grown from the columnar grains of said lower electrode and that takes over a crystal orientation of said lower electrode in each of said columnar grains of said dielectric thin film, the lattice constant of said dielectric thin film being in each of said columnar grains thereof substantially matched with the lattice constant of said lower electrode at the interface with the columnar grains of said lower electrode; andan upper electrode formed on said dielectric thin film.