Patent ID: 7122851

Claim:
A semiconductor device comprising: a semiconductor substrate; and a capacitor provided above the semiconductor substrate, and including a bottom electrode, a top electrode and a dielectric film provided between the bottom electrode and the top electrode, the bottom electrode including: a conductive film selected from a noble metal film and a noble metal oxide film; a metal oxide film having a perovskite structure, provided between the dielectric film and the conductive film, expressed by ABO 3, and containing a first metal element as a B-site element; and a metal film provided between the conductive film and the metal oxide film, and containing a second metal element which is a B-site element of a metal oxide having a perovskite structure, a decrease of Gibbs free energy at a time when the second metal element forms an oxide being larger than that at a time when the first metal element forms an oxide, a thickness of the metal oxide film being 5 nm or less.