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:
Feb. 25, 2025
Filed:
Sep. 10, 2021
Applicant:
Western Digital Technologies, Inc., San Jose, CA (US);
Inventor:
Yoshihiro Ikeda, San Jose, CA (US);
Assignee:
Western Digital Technologies, Inc., San Jose, CA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B 5/66 (2006.01); G11B 5/65 (2006.01); G11B 5/73 (2006.01); G11B 5/84 (2006.01);
U.S. Cl.
CPC ...
G11B 5/66 (2013.01); G11B 5/656 (2013.01); G11B 5/7379 (2019.05); G11B 5/8408 (2013.01);
Abstract
Various apparatuses, systems, methods, and media are disclosed to provide a magnetic recording medium that capping layer doped with an effective amount of metal to control grain-to-grain exchange coupling in a capping layer. A magnetic recording medium includes a substrate, a magnetic recording layer (MRL) on the substrate, and a capping layer on the MRL. The capping layer include Co and is doped with a metal (e.g., Ru or Ta) in a range from 1 atomic percent to 5 atomic percent, inclusive.