US 11,790,944 B2
Heat-assisted magnetic recording head near-field transducer with a plasmonic disk
Yuhang Cheng, Edina, MN (US); Tae-Woo Lee, Eden Prairie, MN (US); Michael A Seigler, Eden Prairie, MN (US); and Yang Wu, Minneapolis, MN (US)
Assigned to SEAGATE TECHNOLOGY LLC, Fremont, CA (US)
Filed by Seagate Technology LLC, Fremont, CA (US)
Filed on Jun. 16, 2022, as Appl. No. 17/807,260.
Claims priority of provisional application 63/215,881, filed on Jun. 28, 2021.
Prior Publication US 2022/0415354 A1, Dec. 29, 2022
Int. Cl. G11B 13/08 (2006.01); G11B 5/31 (2006.01); G11B 5/60 (2006.01); G11B 5/00 (2006.01)
CPC G11B 13/08 (2013.01) [G11B 5/314 (2013.01); G11B 5/6088 (2013.01); G11B 2005/0021 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A heat-assisted magnetic recording head comprising a near-field transducer comprising:
a near-field emitter configured to heat a surface of a magnetic disk; and
a plasmonic disk coupled to the near-field emitter and comprising at least one of rhodium or iridium,
wherein the plasmonic disk and the near-field emitter are coupled to each other at an interface which is substantially orthogonal to an air-bearing surface of the heat-assisted magnetic recording head,
wherein the interface comprises a surface of the plasmonic disk and a surface of the near-field emitter, and
wherein the surface of the plasmonic disk comprises rhodium, iridium, and/or an alloy comprising rhodium, iridium, gold, silver, copper, and/or aluminum.