Patent ID: 7106558
Filing Date: 2006-09-12
Classification: B82Y,G11B

Abstract:
1. A magnetic read head having a track width, comprising: a first dielectric layer on a magnetic shield layer; on said first dielectric layer, a GMR stack that includes a pinned layer that has been magnetized in a first direction and a free layer that has an easy axis in a second direction; on said GMR stack, a capping layer; on said capping layer a current channeling layer; on said current channeling layer, two opposing soft adjacent layers of soft magnetic material separated by a distance equal to said track width; on each opposing soft adjacent layer, an antiferromagnetic layer, said soft adjacent and antiferromagnetic layers being magnetized in a third direction that is between said first and second directions, said soft adjacent layer having a magnetic moment that is about 2–4 times that of said free layer and; on said antiferromagnetic layer, a first layer of tantalum on which is a conductive lead layer overlaid with a second layer of tantalum; and on said second layer of tantalum, a second dielectric layer.