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Method for Patterning Self-aligned Rear Flux Guide

IP.com Disclosure Number: IPCOM000013619D
Original Publication Date: 2000-Dec-01
Included in the Prior Art Database: 2003-Jun-18

Publishing Venue

IBM

Abstract

In magnetoresistive(MR) read heads for hard disk drives, the sensitivity of the heads is limited by several factors. These factors include the magnetoresistive characteristics of the material, the gap/shield structure details, the fly height, and the stabilization scheme. One other factor which limits sensistivity is the fact that the entire MR region does not typically rotate in response to the applied field from the disk. One method to enhance the rotation of the MR region is to add a rear flux guide(RFG) layer behind the MR.(figure 1) Figure 1 Position of RFG relative to MR sensor Shield 2 Gap 2