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Method and system for reducing thermal protrusion of an NFT

A technology of transducers and pins, applied in the direction of hydrodynamic spacing of the head, configuration/installation of the recording head, data recording, etc., can solve the problems of reducing NFT efficacy and difficulties

Active Publication Date: 2014-01-15
WESTERN DIGITAL TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This change may reduce the efficacy of the NFT, which is not desired
Also, finding materials with the required mechanical stability and optical efficiency at high temperatures can be difficult

Method used

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  • Method and system for reducing thermal protrusion of an NFT
  • Method and system for reducing thermal protrusion of an NFT
  • Method and system for reducing thermal protrusion of an NFT

Examples

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Embodiment Construction

[0014] image 3 One embodiment of a method 100 of reducing protrusion of NFTs in an EAMR transducer is shown. Thus, the method 100 may be part of a method for manufacturing an EAMR transducer. For brevity, some steps may be omitted, interleaved, performed in other orders, and / or combined. The EAMR transducer may be part of a merged head that also includes a read head and is located on a slider in a disk drive. The method 100 is also described in the context of providing a single EAMR transducer. However, the method 100 is also used to manufacture multiple transducers substantially simultaneously. The method 100 is also described in the context of a particular layer. However, in some embodiments, such layers may include multiple sub-layers. The method 100 may also begin after the other portions of the EAMR transducer are formed. In one embodiment, the method 100 begins after the various parts of the EAMR transducer are formed. For example, the method 100 may begin after a...

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PUM

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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.

Description

Background technique [0001] 1A and 1B illustrate a portion of a conventional energy-assisted magnetic recording (EAMR) transducer 10 . A conventional EAMR transducer 10 includes a conventional waveguide 12 having a conventional core 18 and claddings 14 , 16 , a grating 20 , a conventional near-field transducer (NFT) 30 , and a write pole 40 . NFT 30 has a disk portion 34 and a pin portion 32 . Stitch portion 32 is between disc portion 34 and an air bearing surface (ABS). A conventional EAMR transducer 10 is used for writing to recording media and receives light or energy from a conventional laser (not shown). [0002] In operation, light from the laser is coupled into the waveguide 12 . A conventional waveguide 12 guides the light to the NFT 30 close to the ABS. NFT 30 utilizes local resonance in surface plasmons to focus light onto a magnetic recording medium (not shown), such as a magnetic disk. The surface plasmons used by NFT30 are electromagnetic waves that propagate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B5/60
CPCG11B5/3136G11B5/314G11B5/3173G11B5/6088G11B2005/0021
Inventor S·M·坦纳Y·胡
Owner WESTERN DIGITAL TECH INC