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US 8,514,673 B1Granted
Layered near-field transducer
AssigneeSeagate Technology LLC
InventorsTong Zhao, Michael Christopher Kautzky, Amit Itagi, Michael Allen Seigler
Life of this patent
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Abstract
A near-field transducer includes a substrate that defines a substrate-parallel plane. The near-field transducer also includes a composite layer deposited on the substrate-parallel plane. The composite layer has a first layer of the plasmonic material and a second layer of an insertion material adjacent the substrate. The insertion material reduces plastic deformation of the near-field transducer at elevated temperatures.
Claims20
A near-field transducer, comprising:
- a substrate that defines a substrate-parallel plane;
- a composite layer deposited on the substrate-parallel plane, the composite layer having a first layer of a plasmonic material and a second layer of an insertion material adjacent the substrate, wherein the insertion material reduces plastic deformation of the near-field transducer at elevated temperatures.
A method, comprising:
- forming a first layer of an insertion material on a substrate to form a planar structure of a near-field transducer;
- and
- forming a second layer of a plasmonic material on the first layer, wherein the first layer and the second layer form a first composite layer of the near-field transducer, and wherein the insertion material reduces plastic deformation of the near-field transducer at elevated temperatures.
A system comprising:
- a near-field transducer formed of at least one composite layer, each composite layer having a first layer of plasmonic material and a second layer of an insertion material, wherein the insertion material reduces plastic deformation of the near-field transducer at elevated temperatures;
- means for delivering light to the near-field transducer to facilitate heating a spot on a magnetic recording media;
- and
- means for inducing a magnetic field at the heated spot to store data.
1 more element
Dependencies are inferred from the claim text.