Patent ID: 6542343
Filing Date: 2003-04-01
Classification: B82Y,G11B

Abstract:
A magnetic tunnel junction head comprising:a magnetic tunnel junction valve having a first edge comprising a sensing surface; a first flux guide in proximity to the first edge in a contiguous fashion without overlapping the valve and without a gap, the first flux guide including: a first portion proximate an air bearing surface of the magnetic tunnel junction head, the first portion having a first width defining a track width; and a second portion proximate the first edge, the second portion having a second width, wherein the first width is smaller than the second width; first and second insulating layers sandwiching the first flux guide; and first and second shields sandwiching the valve and the insulated first flux guide, wherein the insulating layers and the shields each has a surface portion that has a width defined by the track width and that proximate the air bearing surface.