Nft with mechanically robust materials
AssigneeSeagate Technology LLC
InventorsMartin Giles Blaber, Michael Allen Seigler, Michael Christopher Kautzky
Life of this patent
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Abstract
A recording head includes a near-field transducer proximate a media-facing surface. The near-field transducer comprises an aperture portion surrounded by walls of plasmonic material, the walls oriented normal to the media-facing surface. A notch protrudes within the aperture. The notch comprises at least one of Rh and Ir. A write pole is proximate the near-field transducer. The write pole has a back surface facing away from the media-facing surface and an aperture-facing surface proximate the aperture.
Claims20
A recording head comprising:
- a near-field transducer proximate a media-facing surface, the near-field transducer comprising:
- an aperture portion surrounded by walls of plasmonic material, the walls oriented normal to the media-facing surface
- a notch protruding within the aperture, the notch comprising at least one of Rh and Ir;
- and
- a write pole proximate the near-field transducer, the write pole having a back surface facing away from the media-facing surface and an aperture-facing surface proximate the aperture.
A recording head comprising:
- a near-field transducer proximate a media-facing surface, the near-field transducer comprising:
- an aperture portion surrounded by walls of plasmonic material, the walls oriented normal to the media-facing surface
- at least two notches protruding within the aperture, the at least two notches comprising at least one of Rh and Ir;
- and
- a write pole proximate the near-field transducer, the write pole having a back surface facing away from the media-facing surface and an aperture-facing surface proximate the aperture.
A method comprising:
- propagating light via a waveguide from an energy source to a near-field transducer near a media-facing surface of a recording head;
- exciting surface plasmons along walls of an aperture of the near-field transducer and along a notch protruding within the aperture, the walls formed of a plasmonic material and being oriented normal to the media-facing surface, the walls and the notch directing the surface plasmons to a recording medium, the notch comprising at least one of Rh and Ir;
- and
- generating a magnetic field at the recording medium via a write pole proximate the near-field transducer, the write pole having a back surface facing away from the media-facing surface and an aperture-facing surface proximate the aperture.
Dependencies are inferred from the claim text.