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US 10,832,717 B1Granted
Near-field transducer with thermally robust peg embedded into an enlarged portion
AssigneeSeagate Technology LLC
InventorsYuhang Cheng, Nan Zhou, Yongjun Zhao, Huaqing Yin, Weibin Chen, Michael Allen Seigler
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Abstract
A near-field transducer has an enlarged portion with a layer of soft plasmonic material. A peg formed of a thermally robust plasmonic material includes an embedded part that is partially embedded within the enlarged portion and has an exposed surface facing away from the enlarged portion. An intersection between a lower edge of the enlarged portion and the embedded part has a discontinuity.
Claims22
A near-field transducer, comprising:
- an enlarged portion comprising a layer of soft plasmonic material and having a lower edge facing a recording medium, the lower edge extending in a crosstrack direction;
- and
- a peg formed of a thermally robust plasmonic material, the peg comprising an elongated outer part extending towards the recording medium from an embedded part of the peg that is enlarged in the crosstrack direction relative to the elongated outer part and partially embedded within the enlarged portion, the embedded part having an exposed edge that is not embedded in the enlarged portion and that extends in the crosstrack direction, the exposed edge facing towards the recording medium, an intersection between the lower edge of the enlarged portion and the exposed edge of the embedded part having a discontinuity in the crosstrack direction.
A near-field transducer, comprising:
- an enlarged portion comprising a layer of soft plasmonic material;
- and
- a peg formed of a thermally robust plasmonic material, the peg comprising an embedded part that is partially embedded within the enlarged portion and having an exposed surface facing away from the enlarged portion, an intersection between a lower edge of the enlarged portion and the embedded part having a discontinuity, wherein the lower edge of the enlarged portion comprises a flat edge and the embedded part comprises a curved lower edge.
A recording head, comprising:
- a magnetic write transducer;
- a waveguide;
- and
- a near-field transducer proximate the magnetic write transducer and the waveguide, the near-field transducer comprising:
- an enlarged portion comprising a layer of soft plasmonic material and having a lower edge facing a recording medium, the lower edge extending in a crosstrack direction;
- and
- a peg formed of a thermally robust plasmonic material, the peg comprising an elongated outer part extending towards the recording medium from an embedded part of the peg that is enlarged in the crosstrack direction relative to the elongated outer part and partially embedded within the enlarged portion, the embedded part having an edge that is not embedded in the enlarged portion and that extends in the crosstrack direction, the exposed edge facing towards the recording medium, an intersection between the lower edge of the exposed edge of the enlarged portion and the embedded part having a discontinuity in the crosstrack direction.
4 more elements
Dependencies are inferred from the claim text.