Browse Prior Art Database

Magnetoresistive Head

IP.com Disclosure Number: IPCOM000053182D
Original Publication Date: 1981-Sep-01
Included in the Prior Art Database: 2005-Feb-12
Document File: 2 page(s) / 25K

Publishing Venue

IBM

Related People

Lee, K: AUTHOR [+2]

Abstract

In a dual-element read/write head, a canted magnetoresistive (MR) strip 1 is disposed within the gap of the inductive write head, which is formed with two pole pieces, P1 and P2. The write head provides a bias field during the read mode. In operation during the read mode, a small DC current is applied to the write head to generate a small deep gap field that biases the MR strip 1. The bias field can be adjusted to generate the desired biasing field within the strip. The field is small enough so that no erasure occurs during reading. By this means, the need for current shunt bias is eliminated, and sensitivity and signal-to-noise ratio are enhanced.

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Magnetoresistive Head

In a dual-element read/write head, a canted magnetoresistive (MR) strip 1 is disposed within the gap of the inductive write head, which is formed with two pole pieces, P1 and P2. The write head provides a bias field during the read mode. In operation during the read mode, a small DC current is applied to the write head to generate a small deep gap field that biases the MR strip 1. The bias field can be adjusted to generate the desired biasing field within the strip. The field is small enough so that no erasure occurs during reading. By this means, the need for current shunt bias is eliminated, and sensitivity and signal-to-noise ratio are enhanced.

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