Patent ID: 6867468
Filing Date: 2005-03-15
Classification: G11C

Abstract:
1. A magnetic shield for reducing magnetic interference between at least two magnetic memory cells in a magnetic memory array, said memory array comprising a plurality of magnetic memory cells, each of said magnetic memory cells including a data layer and a reference layer, wherein a value stored in said data layer is determinable by measuring a relative orientation of the magnetic moments of said data layer and said reference layer, at least one of said magnetic memory cells during operation emanating fringe magnetic fields potentially influencing a nearly magnetic memory cell, said magnetic shield being made by a process comprising: (a) forming a magnetic shielding adjacent to at least one of said magnetic memory cells to reduce magnetic interference emanating from said at least one of said magnetic memory cells with respect to another of said magnetic memory cells; and (b) forming an insulator separating at least a portion of said magnetic shielding from said at least one magnetic memory cell.