Patent ID: 7133309
Filing Date: 2006-11-07
Classification: G11C,H01L

Abstract:
1. A method for generating an offset field for a magnetic random access memory (MRAM) device, the method comprising: forming a first pinned layer integrally with a wordline, wherein said first pinned layer is formed at the bottom of a trench used to define said wordline; forming a second pinned layer integrally with a bitline; disposing an MRAM cell between said wordline and said bitline, said MRAM cell including a reference layer, an antiparallel free layer, and a tunnel barrier therebetween; wherein said first pinned layer is formed with an internal magnetization in a manner so as to create a first external field generally perpendicular to a long axis of said wordline, and said second pinned layer is formed with an internal magnetization in a manner so as to create a second external field generally perpendicular to a long axis of said bitline.