Magnetic devices with variable overcoats
AssigneeSeagate Technology LLC
InventorsEdwin Frank Rejda, Joseph Michael Stephan, The Ngoc Nguyen, Neil Zuckerman, Gary J. Kunkel, Douglas H. Cole, Michael A. Seigler, Chris Rea
Life of this patent
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Abstract
A magnetic device including: a magnetic reader; a magnetic writer; and a variable overcoat, the variable overcoat positioned over at least the magnetic reader and writer, the variable overcoat having an overcoat layer, the overcoat layer having a substantially constant thickness and material; and at least one disparate overcoat portion, the disparate overcoat portion having a different thickness, a different material, or both, than the overcoat layer.
Claims20
A magnetic device comprising:
- a magnetic reader;
- a magnetic writer;
- and
- a variable overcoat, the variable overcoat positioned over at least the magnetic reader and writer, the variable overcoat comprising:
- an overcoat layer, the overcoat layer having a substantially constant thickness and material;
- and
- at least one disparate overcoat portion, the disparate overcoat portion having a different thickness, a different material, or both, than the overcoat layer.
A method comprising:
- depositing a first layer over the entire surface of a structure, the structure comprising a magnetic reader and a magnetic writer, wherein the magnetic reader and the magnetic writer are positioned adjacent to each other on a substrate;
- removing a portion of the first layer over at least the magnetic reader;
- and
- depositing a second layer over the entire surface of the first layer,
- wherein the first layer and the second layer comprise a variable overcoat, the variable overcoat having a disparate overcoat region over the magnetic writer.
A method comprising:
- depositing a first layer on the entire surface of a structure, the structure comprising a magnetic reader and a magnetic writer, wherein the magnetic reader and the magnetic writer are positioned adjacent to each other on a substrate;
- masking regions of the surface to form exposed and unexposed regions;
- depositing a second layer on the surface of the exposed and unexposed regions;
- and
- removing the unexposed regions and the second layer on the unexposed regions.
Dependencies are inferred from the claim text.