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. 19, 2016
Filed:
Dec. 19, 2012
Applicant:
Hgst Netherlands B.v., Amsterdam, NL;
Inventors:
Gunn Choe, San Jose, CA (US);
Yoshihiro Ikeda, San Jose, CA (US);
Assignee:
HGST Netherlands B.V., Amsterdam, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/66 (2006.01); G11B 5/62 (2006.01); G11B 5/84 (2006.01); G11B 5/65 (2006.01);
U.S. Cl.
CPC ...
G11B 5/62 (2013.01); G11B 5/65 (2013.01); G11B 5/656 (2013.01); G11B 5/66 (2013.01); G11B 5/84 (2013.01);
Abstract
A magnetic media having a novel cap layer that allows the cap layer having improved exchange coupling and reduced thickness. The cap layer is doped with a non-reactive element such as Ar, Kr, Xe, Ne or He preferably Ar. This doping reduces increases exchange coupling and reduces the dead layer, allowing the cap layer to be made thinner for reduced magnetic spacing and improved data recording performance.