Patent ID: 7049650

Claim:
A semiconductor device comprising: a semiconductor substrate; 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 comprising a first conductive film containing iridium, a second conductive film provided between the dielectric film and the first conductive film and formed of a noble metal film, a third conductive film provided between the dielectric film and the second conductive film and formed of a conductive metal oxide film having a perovskite structure, and a diffusion prevention film provided between the first conductive film and the second conductive film and including at least one of a metal film and a metal oxide film, the diffusion prevention film preventing diffusion of iridium contained in the first conductive film, and the dielectric film including an insulating metal oxide film having a perovskite structure, the insulating metal oxide film being expressed by A(Zr x Ti 1-x )O 3 (A is at least one A site element, 0<x<0.35).