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US 8,804,468 B2Granted
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 diffused with the plasmonic material and adjacent the substrate, wherein the insertion material reduces plastic deformation of the near-field transducer at elevated temperatures.
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 comprising:
- a first layer of a plasmonic material adjacent the substrate;
- a second layer of an insertion material on the first layer, the insertion material reducing plastic deformation of the near-field transducer at elevated temperatures;
- and
- a third layer of the plasmonic material on the second layer.
3 more elements
A near-field transducer, comprising:
- a substrate that defines a substrate-parallel plane;
- a first composite layer deposited on the substrate-parallel plane, the first composite layer comprising a first plasmonic layer and a first insertion material layer adjacent the substrate, wherein the first insertion material layer reduces plastic deformation of the near-field transducer at elevated temperatures;
- and
- a second composite layer deposited on the first composite layer and proximate a write pole, the second composite layer comprising a second plasmonic material and a second insertion material layer adjacent the first composite layer, wherein the second insertion material layer facilitates heat transfer to the write pole.
1 more element
Dependencies are inferred from the claim text.