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US 11,769,527 B2Granted
Heat-assisted magnetic recording head near-field transducer with a heat sink
AssigneeSeagate Technology LLC
InventorsMichael A Seigler, Tae-Woo Lee
Life of this patent
Estimating the term…
Abstract
A heat-assisted magnetic recording head includes a near-field transducer (NFT). The NFT includes a near-field emitter configured to heat a surface of a magnetic disk, and a heat sink. The heat sink includes at least one of rhodium, copper, tungsten, tantalum, iridium, platinum, ruthenium, nickel, or iron.
Claims19
A heat-assisted magnetic recording head comprising a near-field transducer comprising:
- a plasmonic disk;
- a near-field emitter configured to heat a surface of a magnetic disk;
- and
- a heat sink comprising at least one of rhodium, copper, tungsten, tantalum, iridium, platinum, ruthenium, nickel, or iron,
- wherein the near-field emitter is disposed between the plasmonic disk and the heat sink in a down-track dimension of the heat-assisted magnetic recording head, and
- wherein the near-field emitter and the plasmonic disk are coupled to each other at an interface comprising a surface of the plasmonic disk and a surface of the near-field emitter.
3 more elements
A heat-assisted magnetic recording head comprising a near-field transducer comprising:
- a waveguide;
- a plasmonic disk;
- a near-field emitter configured to heat a surface of a magnetic disk;
- and
- a heat sink comprising at least one of rhodium, copper, tungsten, tantalum, iridium, platinum, ruthenium, nickel, or iron,
- wherein the plasmonic disk is disposed between the waveguide and the near-field emitter in a down-track dimension of the heat-assisted magnetic recording head,
- wherein the near-field emitter is disposed between the plasmonic disk and the heat sink in the down-track dimension of the heat-assisted magnetic recording head,
- wherein the plasmonic disk and the waveguide are coupled to each other at a first interface comprising a surface of the waveguide and a first surface of the plasmonic disk,
- wherein the near-field emitter and the plasmonic disk are coupled to each other at a second interface comprising a second surface of the plasmonic disk and a first of the near-field emitter, and
- wherein the middle disk and the near-field emitter are coupled to each other at a third interface comprising a second surface of the near-field emitter and a surface of the middle disk.
7 more elements
A heat-assisted magnetic recording head comprising a near-field transducer comprising:
- a plasmonic disk;
- a near-field emitter configured to heat a surface of a magnetic disk;
- a middle disk;
- and
- a heat sink comprising at least one of rhodium, copper, tungsten, tantalum, iridium, platinum, ruthenium, nickel, or iron,
- wherein the near-field emitter is disposed between the plasmonic disk and the middle disk in a down-track dimension of the heat-assisted magnetic recording head,
- wherein the middle disk is disposed between the near-field emitter and the heat sink in the down-track dimension of the heat-assisted magnetic recording head,
- wherein the near-field emitter and the plasmonic disk are coupled to each other at a first interface comprising a surface of the plasmonic disk and a first surface of the near-field emitter,
- wherein the middle disk and the near-field emitter are couple to each other at a second interface comprising a second surface of the near-field emitter and a first surface of the middle disk, and
- wherein the heat sink and the middle disk are coupled to each other at a third interface comprising a second surface of the middle disk and a surface of the heat sink.
7 more elements
Dependencies are inferred from the claim text.