Magnetoresistive head on a side wall for increased recording densities
AssigneeSeagate Technology LLC
InventorsIsabel G. Trindade, Michael A. Seigler
Life of this patent
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Abstract
A read head for use with magnetic recording media having a plurality of magnetic tracks includes a read sensor, first and second magnetic lead shields for improving track resolution, and first and second magnetic shields for improving linear resolution. The read sensor is formed on a side wall of one of the first and second magnetic lead shields using a technique such as ion beam deposition for enhanced film growth rate on the side wall. A magnetic disc drive storage system incorporating the read head and a method of making the read head are also included.
Claims20
A read head for use with magnetic recording media, the magnetic recording media having a plurality of magnetic tracks, each of the tracks having a plurality of magnetic domains, the read head comprising:
- a read sensor;
- first and second magnetic lead shields structured and arranged to shield said read sensor from a magnetic field within magnetic tracks adjacent to a magnetic track upon which a read operation is being performed;
- and
- said read sensor being formed on a side wall of one of said first and second magnetic lead shields.
A magnetic disc drive storage system, comprising:
- a housing;
- a rotatable magnetic storage medium positioned in said housing, said magnetic storage medium having a plurality of magnetic tracks, each of the tracks having a plurality of magnetic domains;
- and
- a movable recording head mounted in said housing adjacent said magnetic storage medium,
- said recording head including a read head, said read head comprising:
- a read sensor;
- first and second magnetic lead shields structured and arranged to shield said read sensor from a magnetic field within magnetic tracks adjacent to a magnetic track upon which a read operation is being performed and to serve as electrical conductor leads for said read sensor;
- and
- said read sensor being formed on a side wall of one of said first and second magnetic lead shields.
A method of making a read head for a magnetic disc drive storage system, comprising:
- providing a substrate;
- depositing a first magnetic shield material on the substrate;
- depositing a first insulating material on the first magnetic shield material;
- depositing a second magnetic shield material on at least a portion of the insulating material;
- depositing a magnetoresistive material on a side wall of the second magnetic shield to form a read sensor of the read head;
- depositing a third magnetic shield material on the first magnetic shield material, the magnetoresistive material and the second magnetic shield material;
- planarizing the third magnetic shield material, the magnetoresistive material and the second magnetic shield material to a desired dimension;
- depositing a second insulating material on the third magnetic shield material, the magnetoresistive material and the second magnetic shield material;
- and
- depositing a fourth magnetic shield material on the second insulating material.
Dependencies are inferred from the claim text.