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:
Jun. 25, 2019
Filed:
Dec. 29, 2017
Headway Technologies, Inc., Milpitas, CA (US);
Matteo Staffaroni, San Ramon, CA (US);
Koji Shimazawa, Cupertino, CA (US);
Tobias Maletzky, San Jose, CA (US);
Xuhui Jin, Sunnyvale, CA (US);
Yoshihiro Tsuchiya, Tokyo, JP;
Tsutomu Chou, Tokyo, JP;
Headway Technologies, Inc., Milpitas, CA (US);
Abstract
A TAMR (thermally assisted magnetic recording) write head uses a gap-based NFT (near-field transducer) to create plasmon near field energy. In one embodiment the NFT is a double ridge aperture structure that simultaneously delivers low transition curvature and better cross-track thermal gradients than previous designs. In another embodiment a NFT comprises a top and bottom ridge not confined to an aperture structure, made of thermo-mechanically stable materials and a parabolic shaped metal layer disposed adjacent to a dielectric waveguide core to couple optical energy to surface plasmon modes.