Patent ID: 6541813
Filing Date: 2003-04-01
Classification: H01L

Abstract:
A capacitor comprising:a lower electrode; a dielectric film provided on the lower electrode and made mainly of crystal containing Ti, O, and at least one element selected from the group consisting of Ba and Sr; and an upper electrode provided on the dielectric film, wherein said dielectric film includes a layer which contacts the upper electrode, has a thickness of at least 5 nm and exhibits a first-order differential Auger electron spectrum, and in the first-order differential spectrum, a ratio A/B is at most 0.3, where A is the absolute value of a difference between a third peak appearing near 420 eV and a fourth peak appearing at an energy level higher than the third peak and near the third peak, and B is the absolute value of a difference between a first peak appearing near 410 eV and a second peak appearing at an energy level lower than the first peak and near the first peak.