US 12,249,356 B1
Heat-assisted magnetic recording head with a resonance enhancing feature
Tae-Woo Lee, Eden Prairie, MN (US); and YongJun Zhao, Bloomington, MN (US)
Assigned to Seagate Technology LLC, Fremont, CA (US)
Filed by Seagate Technology LLC, Fremont, CA (US)
Filed on Dec. 5, 2023, as Appl. No. 18/529,302.
Claims priority of provisional application 63/386,209, filed on Dec. 6, 2022.
Int. Cl. G11B 5/31 (2006.01); G11B 5/00 (2006.01)
CPC G11B 5/3136 (2013.01) [G11B 2005/0021 (2013.01)] 29 Claims
OG exemplary drawing
 
1. A heat-assisted magnetic recording head comprising:
a near-field transducer configured to focus and emit an optical near-field;
a waveguide configured to receive electromagnetic radiation and propagate the electromagnetic radiation toward and proximal to the near-field transducer; and
a resonance enhancing feature disposed proximal to the near-field transducer and to a media-facing surface of the heat-assisted magnetic recording head,
the resonance enhancing feature comprising a first segment and a second segment disposed on opposite sides of the near-field transducer relative to a cross-track dimension of the heat-assisted magnetic recording head,
wherein each of the first segment and the second segment of the resonance enhancing feature comprises:
a liner comprising an edge with a portion that is at least partially exposed and with a portion that at least partially faces the near-field transducer; and
a filler disposed distal to the near-field transducer relative to the liner.