NEAR-FIELD TRANSDUCER WITH MULTIPLE HEAT SINKS

摘要

An apparatus comprises a writer, a near-field transducer (NFT), a channel waveguide proximate the NFT, a dielectric layer between the NFT and waveguide, and a plurality of heat sinks. A first heat sink comprises a gap and contacts the NFT and the writer. A second heat sink extends across the gap of the first heat sink and between the NFT and a heat reservoir component, such as a return pole of the writer. The channel waveguide may contact the second heat sink, such as by encompassing a peripheral portion of the second heat sink. The second heat sink may have at least an outer surface comprising a plasmonic material, and may be configured to enhance plasmonic excitation of the NFT.

主权项

1. An apparatus, comprising:
a slider of a heat assisted magnetic recording head; a writer on the slider; a near-field transducer (NFT) on the slider and comprising:
an enlarged region having a first surface; anda peg region extending from the enlarged region; an optical channel waveguide proximate the first surface of the NFT; a dielectric layer between the NFT and the optical channel waveguide; and a heat sink extending from the first surface of the enlarged region of the NFT, passing through the dielectric layer and the optical channel waveguide, and terminating at a heat reservoir component of the slider.