Patent ID: 9082949
Filing Date: 2015-07-14
Classification: G11C,H01L

Abstract:
1. A method of forming a magnetic memory, comprising: providing a layer stack comprising a plurality of magnetic layers and a plurality of initially electrically conducting layers on a base portion of a substrate; forming a first mask feature on an outer surface of the layer stack above a first protected region and a second mask feature on the outer surface of the layer stack above a second protected region, the first mask feature and second mask feature defining an exposed region of the layer stack in portions of the layer stack therebetween; and directing ions towards the exposed region of the layer stack in an ion exposure that is effective to selectively remove a metallic species from an initially electrically conductive layer of the plurality of the initially electrically conductive layers of the layer stack, by causing transport of the metallic species toward an outer surface of the layer stack, wherein the initially electrically conductive layer becomes electrically insulating.