Recording head for heat assisted magnetic recording with diffusion barrier surrounding a near field transducer
AssigneeSeagate Technology LLC
InventorsJie Zou, Kaizhong Gao, William Albert Challener, Mark Henry Ostrowski, Venkateswara Rao Inturi, Tong Zhao, Michael Christopher Kautzky
Life of this patent
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Abstract
An apparatus includes a near field transducer positioned adjacent to an air bearing surface, a first magnetic pole, a heat sink positioned between the first magnetic pole and the near field transducer, and a diffusion barrier positioned between the near field transducer and the first magnetic pole. The diffusion barrier can be positioned adjacent to the magnetic pole or the near field transducer.
Claims20
An apparatus comprising:
- a near field transducer positioned adjacent to an air bearing surface;
- a first magnetic pole;
- and
- a heat sink positioned between the first magnetic pole and the near field transducer, wherein the heat sink comprises one of Rh, Ru, Ti, Ta, W;
- an alloy of Rh, Ru, Ti, Ta or W;
- a boride;
- a nitride;
- or a transition metal oxide.
An apparatus comprising:
- a near field transducer positioned adjacent to an air bearing surface of the apparatus;
- a first magnetic pole;
- a heat sink positioned between the first magnetic pole and the near field transducer;
- and
- a diffusion barrier positioned between the near field transducer and the heat sink.
An apparatus comprising:
- a near field transducer positioned adjacent to an air bearing surface, the near field transducer comprising gold, silver, copper or alloys of gold, silver, or copper;
- a first magnetic pole;
- a heat sink positioned between the first magnetic pole and the near field transducer;
- and
- a diffusion barrier positioned between the near field transducer and the first magnetic pole, the diffusion barrier comprising Rh, Ru, Ti, Ta, W;
- an alloy of Rh, Ru, Ti, Ta or W;
- a boride, a nitride;
- or a transition metal oxide.
The apparatus according to 12, wherein the diffusion barrier comprises a multilayer structure.
Dependencies are inferred from the claim text.