US 11,900,963 B2
Heat-assisted magnetic recording head near-field transducer with a hybrid 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. 17/807,248.
Prior Publication US 2023/0410843 A1, Dec. 21, 2023
Int. Cl. G11B 13/08 (2006.01); G11B 5/31 (2006.01); G11B 5/48 (2006.01); G11B 5/60 (2006.01); G11B 5/00 (2006.01)
CPC G11B 13/08 (2013.01) [G11B 5/314 (2013.01); G11B 5/4866 (2013.01); G11B 5/6088 (2013.01); G11B 2005/0021 (2013.01)] 16 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;
a waveguide; and
a hybrid plasmonic disk comprising:
a plasmonic region comprising a plasmonic material; and
a thermal region comprising a material that is different than the plasmonic material,
wherein the hybrid plasmonic disk is coupled to the waveguide or to the near-field emitter at an interface that is substantially orthogonal to an air-bearing surface of the heat-assisted magnetic recording head, the interface comprising a surface of the plasmonic region and a surface of the thermal region of the hybrid plasmonic disk.