Patent ID: 6872669
Filing Date: 2005-03-29
Classification: H01L

Abstract:
1. A method of forming a ferroelectric device, comprising: forming a bottom electrode diffusion barrier layer over a substrate, the bottom electrode diffusion barrier layer having a smooth top surface associated therewith, wherein forming the bottom electrode diffusion barrier layer with the smooth top surface comprises depositing the layer by either physical vapor deposition or sputtering followed by ion beam smoothing thereof with an ion beam; forming a bottom electrode layer over the bottom electrode diffusion barrier layer, wherein the top surface of the bottom electrode diffusion layer is sufficiently smooth to facilitate formation of the bottom electrode layer thereover having a (111) texture associated therewith; forming a PZT ferroelectric dielectric layer over the bottom electrode layer, wherein the PZT ferroelectric dielectric layer comprises a (111) texture associated therewith; and forming a top electrode layer over the PZT ferroelectric dielectric layer.