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US 8,804,469 B2Granted
Thermally assisted magnetic write head employing a plasmonic antenna comprising an alloyed film to improve the hardness and manufacturability of the antenna
AssigneeHGST Netherlands B.V.
InventorsVijay P. S. Rawat, Barry C. Stipe
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Abstract
A thermally assisted write head having a plasmonic heating device. The plasmonic heating device has a plasmonic antenna located at an air bearing surface of the thermally assisted write head. The plasmonic antenna is constructed of an alloy that is sufficiently hard to withstand the processes such as ion milling and chemical mechanical polishing used to construct the plasmonic antenna. The plasmonic antenna is preferably constructed of AuX, where X is Cu, Ni, Ta, Ti, Zr or Pt having a concentration less than 5 atomic percent.
Claims8
A thermally assisted magnetic write head, comprising:
- a near field transducer comprising a metallic E-shaped antenna comprising a metal alloy;
- a magnetic pole;
- and
- a magnetic lip connected with the magnetic pole.
1 more element
Dependencies are inferred from the claim text.