Heat-assisted magnetic recording head near-field transducer with a hybrid plasmonic disk
AssigneeSeagate Technology LLC
InventorsYuhang Cheng, Tae-Woo Lee, Michael A Seigler, Yang Wu
Life of this patent
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Abstract
A heat-assisted magnetic recording head comprises a near-field transducer (NFT). The NFT comprises a near-field emitter configured to heat a surface of a magnetic disk, and a hybrid plasmonic disk. The hybrid plasmonic disk comprises a plasmonic region and a thermal region. The plasmonic region comprises a first material or alloy that is a plasmonic material or alloy. The thermal region comprises a second material or alloy that is different than the first material or alloy.
Claims16
A heat-assisted magnetic recording head comprising a near-field transducer comprising:
- a near-field emitter configured to heat a surface of a magnetic disk;
- a waveguide;
- and
- a hybrid plasmonic disk comprising:
- a plasmonic region comprising a plasmonic material;
- and
- a thermal region comprising a material that is different than the plasmonic material,
- wherein the hybrid plasmonic disk is coupled to the waveguide or to the near-field emitter at an interface that is substantially orthogonal to an air-bearing surface of the heat-assisted magnetic recording head, the interface comprising a surface of the plasmonic region and a surface of the thermal region of the hybrid plasmonic disk.
A heat-assisted magnetic recording head comprising a near-field transducer comprising:
- a near-field emitter configured to heat a surface of a magnetic disk;
- a waveguide;
- and
- a hybrid plasmonic disk comprising:
- a plurality of plasmonic regions;
- and
- a plurality of thermal regions,
- wherein the hybrid plasmonic disk is coupled to the waveguide or to the near-field emitter at an interface that is substantially orthogonal to an air-bearing surface of the heat-assisted magnetic recording head, the interface comprising a surface of at least one of the plasmonic regions and a surface of at least one of the thermal regions of the hybrid plasmonic disk.
A heat-assisted magnetic recording head comprising a near-field transducer comprising:
- a near-field emitter configured to heat a surface of a magnetic disk;
- and
- a hybrid plasmonic disk comprising:
- a plurality of plasmonic regions;
- and
- a plurality of thermal regions,
- wherein the plurality of plasmonic regions and the plurality of thermal regions are provided in an alternating layered configuration,
- the layering oriented along an axis which is substantially perpendicular to an air-bearing surface of the heat-assisted magnetic recording head, and
- wherein a plasmonic region and a thermal region are coupled to each other at an interface that is substantially parallel to an air-bearing surface of the heat-assisted magnetic recording head, the interface comprising:
- a surface of the plasmonic region;
- and
- a surface of the thermal region.
Dependencies are inferred from the claim text.