Method for thermally isolating a magnetoresistive element from thermal asperities
AssigneeSeagate Technology LLC
InventorsZine-Eddine Boutaghou, Bruno Jean Marchon, Jing Gui
Life of this patent
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Abstract
A reader and a method of fabricating a reader having a thermally isolated magnetoresistive element is disclosed. The method includes fabricating a magnetoresistive read transistor between a top shield and a bottom shield. The magnetoresistive read transistor is then coated with a thermally isolating material. The magnetoresistive read transistor can be coated with a zirconia compound such as zirconium diboride. For additional thermal isolation, a layer of diamond-like carbon can be deposited over the thermally isolating material.
Claims25
A reader supported by a slider, the reader being recessed from an air bearing surface of the slider adjacent the reader by a pole tip recession, the reader comprising:
- a magnetoresistive read transducer positioned between a top shield and a bottom shield;
- and
- means for thermally isolating the magnetoresistive read transducer, the means for thermally isolating being positioned between the magnetoresistive read transducer and each of the air bearing surface, the top shield, and the bottom shield.
A reader supported by a slider, the reader being recessed from an air bearing surface of the slider adjacent the reader by a pole tip recession, the reader comprising:
- a magnetoresistive read element positioned between a top shield and a bottom shield;
- and
- a thermally isolating material that surrounds the magnetoresistive read element in the pole tip recession such that the thermally isolating material is positioned between the magnetoresistive read element and each of the top shield, the bottom shield and the air bearing surface.
A transducing head formed on a rail of a substrate, the transducing head being recessed from the air bearing surface of the rail by a pole tip recession, the transducing head comprising:
- a bottom shield;
- a top shield;
- a magnetoresistive read element positioned between the bottom shield and the top shield;
- and
- a thermal barrier that coats the bottom shield, the top shield and the magnetoresistive read element in the pole tip recession, such that the magnetoresistive read element is separated from each of the bottom shield and the top shield by the barrier, and such that the barrier separates an air bearing surface of the rail from the magnetoresistive read element.
A reader supported by a slider, the reader being recessed from an air bearing surface of the slider adjacent the reader by a pole tip recession, the reader comprising:
- a magnetoresistive read transducer positioned between a top shield and a bottom shield;
- means for thermally isolating the magnetoresistive read transducer, the means for thermally isolating having a media-opposing surface not extending beyond the air bearing surface, the means for thermally isolating comprising a coating of thermally isolating material fabricated over the magnetoresistive read transducer;
- and
- a layer of diamond-like carbon deposited over means for thermally isolating the magnetoresistive read transducer, the layer of diamond-like carbon not extending beyond the air bearing surface.
Dependencies are inferred from the claim text.