The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 23, 2019
Filed:
Dec. 23, 2017
Western Digital Technologies, Inc., San Jose, CA (US);
The Provost, Fellows, Foundation Scholars and the Other Members of the Board, of the College of the Holy and Undivided Trinity of Queen Elizabeth Near Dublin, Dublin, IE;
Alexander Krichevsky, Cupertino, CA (US);
Frank Bello, Jackson, CA (US);
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;
Western Digital Technologies, Inc., San Jose, CA (US);
The Provost, Fellows, Scholars and other Members of Board of Trinity College Dublin, Dublin, IE;
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.