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US 6,713,800 B2Granted
Magnetoresistive sensor with reduced side-reading effect
AssigneeSeagate Technology LLC
InventorsErli Chen, Sining Mao, Zheng Gao, Paul Kolbo, Douglas Saunders
Life of this patent
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Abstract
A read sensor for use in a magnetic read head includes a magnetoresistive stack having a plurality of layers, and first and second shield regions positioned adjacent to the magnetoresistive stack. Each of the shield regions includes a first soft magnetic layer for shunting flux from an adjacent track to the shield region instead of the magnetoresistive stack.
Claims25
A read sensor for use in a magnetic read head, the read sensor comprising:
- a magnetoresistive stack having a plurality of layers;
- and
- first and second shield regions positioned adjacent to the magnetoresistive stack, each of the shield regions including a first soft magnetic layer abutted to the magnetoresistive stack for shunting flux from an adjacent track to the shield region instead of the magnetoresistive stack.
A read sensor for use in a magnetic read head, the read sensor comprising:
- a magnetoresistive stack having a plurality of layers;
- and
- first and second shield regions positioned adjacent to the magnetoresistive stack, wherein each shield region comprises:
- a first soft magnetic layer abutted to the magnetoresistive stack;
- a first permanent magnet layer abutted to the magnetoresistive stack;
- and
- a first seed layer abutted to the magnetoresistive stack and positioned between the first soft magnetic layer and the first permanent magnet layer.
4 more elements
Dependencies are inferred from the claim text.