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:
Apr. 02, 2019
Filed:
Sep. 22, 2017
Seagate Technology Llc, Cupertino, CA (US);
Randall Victora, New Brighton, MN (US);
Zengyuan Liu, St. Paul, MN (US);
Pin-wei Huang, Fremont, CA (US);
Ganping Ju, Pleasanton, CA (US);
Jan-Ulrich Thiele, Sunnyvale, CA (US);
Seagate Technology LLC, Cupertino, CA (US);
Regents of the University of Minnesota, Minneapolis, MN (US);
Abstract
A heat-assisted magnetic recording media structure with exchange-coupled composite layer structure may be utilized in a data storage device. The heat-assisted magnetic recording disk structure can have a FePt-based layer as a storage layer and a FePt-based or a CoPt-based magnetic layer with higher Curie temperature as a write layer. The interface between the write layer and the storage layer may be separated by an exchange control layer. The composite structure can be optimized to reduce jitter for high density data storage by tuning the exchange coupling between the write layer and storage layer.