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US 2015/0085630 A1Published application
Multi-purpose near-field transducer having a temperature coefficient of resistance
AssigneeSeagate Technology LLC
InventorsDeclan Macken, James Dillon Kiely
Life of this patent
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Abstract
An apparatus includes a writer, an arrangement comprising a plasmonic near-field transducer (NFT) adjacent the writer and comprising a material having a temperature coefficient of resistance (TCR), and a lead arrangement connected to the NFT arrangement. In some configurations, the NFT arrangement includes a heat sink, and the lead arrangement is connected to the heat sink. In other configurations, the lead arrangement is connected directly to the NFT.
Claims25
An apparatus, comprising:
- a writer;
- a plasmonic near-field transducer (NFT) adjacent the writer, the NFT comprising an elongated peg member and a material having a temperature coefficient of resistance (TCR);
- and
- a lead arrangement comprising at least a pair of leads electrically connected to the elongated peg member of the NFT.
1 more element
(canceled)
(canceled)
An apparatus, comprising:
- a writer of a transducer configured to magnetically interact with a magnetic recording medium;
- a plasmonic near-field transducer (NFT) adjacent the writer, the NFT comprising an elongate peg member and a material having a temperature coefficient of resistance (TCR);
- and
- a lead arrangement comprising at least a pair of leads connected to the elongate peg member of the NFT, wherein a signal developed at the lead arrangement comprises a component that varies in relation to a change in spacing between the transducer and the medium.
1 more element
An apparatus, comprising:
- a slider;
- a writer on the slider;
- a plasmonic near-field transducer (NFT) comprising an elongated peg member, the NFT having a temperature coefficient of resistance (TCR) and provided on the slider adjacent to the writer, the NFT configured to produce a signal indicative of temperature at the NFT;
- and
- circuitry comprising at least a pair of leads electrically connected to the elongated peg member of the NFT.
2 more elements
(canceled)
A method, comprising:
- directly sensing with at least a pair of leads a temperature at a slider from either a plasmonic near-field transducer (NFT) or a heat sink connected to the NFT, the NFT comprising either:
- (a) an elongated peg member, wherein the pair of leads are connected to the peg member;
- or (b) an enlarged region in contact with a peg region, wherein the pair of leads are connected to the heat sink;
- and
- performing a predetermined action in response to the sensed temperature.
2 more elements
An apparatus, comprising:
- a writer;
- a plasmonic near-field transducer (NFT) adjacent the writer, the NFT comprising an enlarged region and a peg in contact with the enlarged region, and the NFT comprising a material having a temperature coefficient of resistance (TCR);
- a heat sink region in thermal contact with the enlarged region and the peg region;
- and
- a lead arrangement electrically coupled to the NFT, the lead arrangement comprising a least a pair of leads connected to the heat sink region.
2 more elements
Dependencies are inferred from the claim text.