公开(公告)号：US11710502B1

公开(公告)日：2023-07-25

申请号：US17653016

申请日：2022-03-01

Applicant: Seagate Technology LLC

Inventor： Tae-Woo Lee ,  Derek Leventry

IPC: G11B5/00 ,  G11B5/31 ,  G11B13/08 ,  G11B5/48 ,  G11B5/60

CPC classification number: G11B5/314 ,  G11B5/4866 ,  G11B5/6088 ,  G11B13/08 ,  G11B2005/0021

Abstract: A heat-assisted magnetic recording head includes a waveguide and a near-field transducer. The near-field transducer includes a plasmonic disk disposed proximal to the waveguide. The plasmonic disk includes a first plasmonic layer, a second plasmonic layer, and a middle layer. The first plasmonic layer is coupled to the waveguide. The second plasmonic layer is disposed distal to the waveguide relative to the first plasmonic layer. The middle layer is disposed between the first plasmonic layer and the second plasmonic layer.