Patent ID: 9007729
Filing Date: 2015-04-14
Classification: G11B

Abstract:
1. A read sensor, comprising: an antiferromagnetic (AFM) pinning layer configured to pin a magnetic orientation of one or more pinned layers positioned thereon in a predetermined manner, the AFM pinning layer being recessed from a media-facing surface in an element height direction to a first height; a first antiparallel pinned multilayer (AP1) positioned above the AFM pinning layer, each layer thereof extending beyond the first height to the media-facing surface; a second antiparallel pinned layer (AP2) positioned above the AP1 and extending beyond the first height to the media-facing surface; and a free layer configured to respond to magnetic information stored to a magnetic medium, the free layer being positioned at the media-facing surface above the AP2 and extending from the media-facing surface in the element height direction to a second height, wherein the element height direction is perpendicular to the media-facing surface, wherein each layer of the AP1 and the AP2 is not recessed from the media-facing surface, and wherein the AFM, the AP1, and the AP2 extend beyond the free layer in the element height direction beyond the second height.