Near-field transducer for heat assisted magnetic recording comprising of thermally stable material layer
AssigneeWestern Digital Technologies, Inc.
InventorsTakuya MATSUMOTO, Vijay Prakash Singh RAWAT, Barry C. STIPE
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Abstract
Embodiments disclosed herein generally relate to a HAMR head. The HAMR head includes a main pole, a waveguide and a NFT disposed between the main pole and the waveguide. The NFT includes an antenna, and the antenna includes a first portion and a second portion. The second portion may be made of a material having a higher melting point than the material of the first portion. Having the second portion helps reduce the temperature rise of the NFT and reduce the laser power applied to the NFT.
Claims18
A heat assisted magnetic recording head, comprising:
- a main pole;
- a waveguide;
- a nanobeak near-field transducer disposed between the main pole and the waveguide, wherein the near-field transducer comprises an antenna, wherein the antenna includes a first portion made of a first material, and a second portion made of a second material, wherein the second material is different from the first material;
- and
- a thermal shunt coupled to the antenna.
A heat assisted magnetic recording head, comprising:
- a main pole;
- a waveguide;
- a heat sink;
- a nanobeak near-field transducer disposed between the main pole and the waveguide, wherein the near-field transducer comprises an antenna, wherein the antenna includes a first portion made of a first material and a second portion made of a second material, wherein the second material is different from the first material, wherein the antenna additionally includes a first surface at a media facing surface, wherein the antenna has a second surface facing the waveguide, and wherein the second portion includes at least a portion of the first surface or the second surface;
- and
- a thermal shunt disposed between the antenna and the heat sink.
A heat assisted magnetic recording head, comprising:
- a main pole;
- a waveguide;
- a nanobeak near-field transducer disposed between the main pole and the waveguide, wherein the near-field transducer comprises an antenna;
- a thermal shunt coupled to the antenna;
- and
- a layer disposed between the thermal shunt and the antenna, wherein the magnetic recording head includes a media facing surface, wherein the antenna includes a first portion of a first material and a second portion of a second material that is different from the first material, wherein the antenna has a first surface facing the waveguide, a second surface at the media facing surface, and a third surface facing the thermal shunt, wherein the second portion is at one or more of the first surface, the second surface or the third surface.
A hard disk drive, comprising:
- a magnetic media;
- a magnetic read head;
- and
- a heat assisted magnetic recording magnetic write head, wherein the heat assisted magnetic recording magnetic write head comprises:
- a main pole;
- a waveguide;
- a heat sink;
- a nanobeak near-field transducer disposed between the main pole and the waveguide, wherein the near-field transducer comprises an antenna, wherein the antenna includes a first portion made of a first material and a second portion made of a second material that is different from the first material, wherein the antenna has a first surface facing the waveguide, a second surface at a media facing surface, and a third surface facing the heat sink, wherein the second portion is at one or more of the first surface, the second surface of the third surface;
- and
- a thermal shunt disposed between the antenna and the heat sink.
Dependencies are inferred from the claim text.