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US 9,177,577 B2Granted
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.
Claims20
An apparatus, comprising:
- a slider;
- a writer on the slider;
- a plasmonic near-field transducer (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 a lead arrangement electrically and directly connected to the NFT;
- wherein the NFT serves as a heat source for effecting heat-assisted magnetic recording and a temperature sensor.
3 more elements
An apparatus, comprising:
- a slider;
- a writer on the slider;
- a plasmonic near-field transducer (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;
- a heat sink thermally coupled to the NFT;
- and
- circuitry comprising a lead arrangement electrically and directly connected to the NFT;
- wherein the NFT serves as a heat source for effecting heat-assisted magnetic recording and a temperature sensor.
4 more elements
Dependencies are inferred from the claim text.