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:
Oct. 24, 2017
Filed:
Mar. 13, 2013
Applicant:
Seagate Technology Llc, Cupertino, CA (US);
Inventors:
Xi Chen, Fremont, CA (US);
Yingguo Peng, San Ramon, CA (US);
Jan-Ulrich Thiele, Sunnyvale, CA (US);
Ganping Ju, Pleasanton, CA (US);
Thomas Roscamp, Kihei, HI (US);
Assignee:
SEAGATE TECHNOLOGY, LLC, Cupertino, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B 5/65 (2006.01); G11B 5/716 (2006.01); G11B 5/68 (2006.01); G11B 5/66 (2006.01);
U.S. Cl.
CPC ...
G11B 5/716 (2013.01); G11B 5/65 (2013.01); G11B 5/66 (2013.01); G11B 5/68 (2013.01);
Abstract
A magnetic stack includes a substrate and a magnetic recording layer disposed over the substrate. The magnetic recording layer comprises magnetic crystalline grains and a segregant disposed between grain boundaries of the crystalline grains. One or both of the magnetic crystalline grains and the segregant are doped with a rare earth or transition metal dopant in an amount that provides the magnetic recording layer with a magnetic damping value, α, between about 0.1 to about 1.