Write head with multi-stitched second pole piece

Abstract

In the present invention a second pole yoke component of a second pole piece is connected (stitched) to a small top surface of a second pole tip component of the second pole piece as well as to a back edge and first and second side edges of the second pole tip component. The extra stitching at the back and side edges provides the required magnetic coupling between the components for transferring flux to and from a second pole tip at an air bearing surface. This arrangement shortens the length of the top stitched area so that one or more coil layers in an insulation stack can be located closer to the ABS for increasing the data rate of the head. Further, this arrangement reduces the amount of material of the second pole piece layer in close proximity to the first pole piece layer so as to minimize flux leakage therebetween.

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