Devices including a near field transducer (NFT) including peg and disc from different materials
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United States of America Patent
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Jan 9, 2018
Grant Date -
Dec 1, 2016
app pub date -
May 27, 2016
filing date -
May 28, 2015
priority date (Note) -
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Abstract
Devices that have an air bearing surface (ABS), the device includes a near field transducer (NFT) that includes a disc configured to convert photons incident thereon into plasmons; and a peg configured to couple plasmons coupled from the disc into an adjacent magnetic storage medium, wherein the disc includes a disc material that includes gold or an alloy thereof and the peg includes a peg material, wherein the disc material is different from the peg material and wherein the peg material has a real part of the permittivity that is not greater than that of gold.
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