US Patent:
20190198053, Jun 27, 2019
Inventors:
- San Jose CA, US
- Dublin, IE
Christopher WOLF - San Jose CA, US
Fenghua ZONG - San Jose CA, US
Daniel WOLF - San Jose CA, US
David MCCLOSKEY - Co. Louth, IE
Kyle BALLANTINE - Limerick, IE
John DONEGAN - Co. Kildare, IE
Assignee:
Western Digital Technologies, Inc. - San Jose CA
The Provost, Fellows, Foundation Scholars and the other members of the Board, of the College of the - Dublin
International Classification:
G11B 13/08
Abstract:
Disclosed herein are embodiments of a heat-assisted magnetic recording (HAMR) device comprising a waveguide and a near-field transducer (NFT) coupled to the waveguide. The NFT comprises a core layer comprising an insulator, a first metal layer adjacent to the core layer, and a second layer adjacent to the first metal layer, wherein the second layer comprises a material that is substantially mechanically and thermally stable and thereby functions as a hard jacket to mitigate deformation of the NFT. The first metal layer may comprise a plasmonic metal, such as gold. The second layer may comprise tungsten, chromium, or a dielectric material.