Patent ID: 6783994
Filing Date: 2004-08-31
Classification: B82Y,G11C,H01L

Abstract:
A method of fabricating a magnetoresistive random access memory device comprising the steps of:providing a substrate; forming a first conductive layer positioned on the substrate; depositing a second conductive layer positioned on a portion of the first conductive layer, the second conductive layer having a top surface and a bottom surface wherein the bottom surface is positioned on the first conductive layer and wherein the bottom surface has a bottom width and the top surface has a top width; depositing a third conductive layer positioned on the top surface of the second conductive layer; etching the second conductive layer to form an undercut gap beneath the third conductive layer; and forming a magnetoresistive random access memory device positioned on the third conductive layer, the magnetoresistive random access memory device being isolated from the first conductive layer and subsequent layers grown thereon.