US 11,657,844 B1
Heat-assisted magnetic recording head with a heat sink having a liner
Tae-Woo Lee, Eden Prairie, MN (US); and Jiaoming Qiu, Maple Grove, MN (US)
Assigned to Seagate Technology LLC, Fremont, CA (US)
Filed by Seagate Technology LLC, Fremont, CA (US)
Filed on Mar. 15, 2022, as Appl. No. 17/654,878.
Int. Cl. G11B 5/31 (2006.01); G11B 5/48 (2006.01); G11B 5/73 (2006.01); G11B 5/00 (2006.01)
CPC G11B 5/7375 (2019.05) [G11B 5/314 (2013.01); G11B 5/4866 (2013.01); G11B 2005/0021 (2013.01)] 20 Claims
OG exemplary drawing
1. A heat-assisted magnetic recording head comprising:
a near-field transducer; and
a heat sink,
the near-field transducer comprising:
a middle disk; and
a near-field emitter comprising:
a peg configured to produce a hot spot on a proximal magnetic disk, the peg disposed proximal to a media-facing surface of the heat-assisted magnetic recording head; and
an anchor disk disposed behind the peg relative to the media-facing surface,
the heat sink comprising:
a core comprising a primary metal; and
a liner having a melting temperature of at least 1500 degrees Celsius,
wherein the liner is coupled to the core and is disposed along an outer surface of the core, and
wherein the middle disk is disposed between and coupled to the liner and the anchor disk.