Method and system for reducing thermal protrusion of an NFT
AssigneeWestern Digital (Fremont), LLC
InventorsShawn M. Tanner, Yufeng Hu
Life of this patent
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Abstract
A method and system provide a near-field transducer (NFT) for an energy assisted magnetic recording (EAMR) transducer. The method and system include forming an NFT having a disk and a pin. A dielectric layer that substantially covers the NFT is deposited. A portion of the dielectric layer is removed such that the dielectric layer has an aperture therein. The aperture exposes the pin of the NFT. The EAMR transducer is annealed at a temperature greater than the expected operating temperature of the EAMR transducer.
Claims14
A method for providing a near-field transducer (NFT) for an energy assisted magnetic recording (EAMR) transducer the method comprising:
- forming an NFT having a disk and a pin;
- depositing a dielectric layer substantially covering the NFT;
- removing a portion of the dielectric layer such that dielectric layer has an aperture therein, the aperture exposing the pin;
- and
- annealing the EAMR transducer at a temperature greater than an expected operating temperature of the EAMR transducer.
An EAMR transducer having an air-bearing surface (ABS) configured to reside in proximity to a media during operation, the EAMR transducer comprising:
- a near field transducer (NFT) for focusing the energy onto the region of the media, the NFT having a disk and a pin proximate to the ABS, the pin protruding not more than one nanometer during operation of the EAMR transducer;
- a write pole configured to write to a region of the media;
- and
- at least one coil for energizing the write pole.
Dependencies are inferred from the claim text.