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US 8,339,740 B2Granted
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
Estimating the term…
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;
- 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.
2 more elements
An apparatus comprising:
- a waveguide having a core layer;
- 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 core layer.
3 more elements
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 heat sink provides a diffusion barrier between the near field transducer and the first magnetic pole.
1 more element
Dependencies are inferred from the claim text.