公开(公告)号：US11646058B1

公开(公告)日：2023-05-09

申请号：US17657167

申请日：2022-03-30

Applicant: Seagate Technology LLC

Inventor： Martin Giles Blaber ,  Michael Allen Siegler ,  James G Wessel ,  YuHang Cheng ,  Scott M Franzen

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

CPC classification number: G11B13/08 ,  G11B5/3106 ,  G11B2005/0021

Abstract: A heat-assisted magnetic recording head includes a near-field transducer, a heat sink, a diffuser, and a diffusion barrier. The near-field transducer is configured to produce a hot spot on a proximate magnetic disk. The heat sink is configured to draw heat away from the near-field transducer. The heat sink is disposed in a down-track direction relative to and coupled to the near-field transducer. The diffuser is configured to draw heat away from the heat sink. The diffuser is disposed in a down-track direction relative to the heat sink. The diffusion barrier includes a metal. The diffusion barrier is disposed between and coupled to the heat sink and the diffuser.