Patent ID: 7634851
Filing Date: 2009-12-22
Classification: B82Y,G11C,H01F,H01L,Y10T

Abstract:
1. A method of forming a magnetic random access memory element, said method comprising: forming a pinning structure in electrical communication with a first conductive material; forming a first nonmagnetic material adjacent said pinning structure; removing a portion of the first nonmagnetic material to form an opening which exposes a portion of the pinning structure; forming a second nonmagnetic material adjacent to the first nonmagnetic material and within the opening, wherein the second nonmagnetic material has a first thickness and the first nonmagnetic material has a second thickness where the second thickness is larger than the first thickness, and a portion of the second nonmagnetic material forms a tunnel barrier; forming a sensing structure adjacent said second nonmagnetic material; and forming a second conductive material in electrical communication with said sensing structure and in proximity to the portion of the second nonmagnetic material forming the tunnel barrier.