Patent ID: 7012292
Filing Date: 2006-03-14
Classification: H01L

Abstract:
1. A microelectronic device structure comprising: a silicon substrate comprising at least one additional layer selected from the group consisting of a bottom electrode layer, a diffusion barrier layer, an insulating layer and a buffer layer; a ferroelectric oxide film material positioned over the silicon substrate, wherein the ferroelectric oxide material has a top surface and vicinity thereunder that is substantially stoichiometrically complete in oxygen concentration; a top electrode comprising a top surface and a bottom surface, wherein the bottom surface directly contacts the top surface of the ferroelectric oxide film material and comprises a metal sub-oxide material selected from the group consisting of Ir sub-oxides, Rh sub-oxides, and mixtures thereof, and the top surface of the top electrode consists of a metal selected from the group consisting of Ir, Rh and mixtures thereof, wherein the transition from the bottom surface of the top electrode to the top surface of the top electrode is increasingly metallic.