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:
Jan. 31, 2017
Filed:
Nov. 26, 2014
Hgst Netherlands B.v., Amsterdam, NL;
Olav Hellwig, San Jose, CA (US);
Shikha Jain, San Jose, CA (US);
Oleksandr Mosendz, San Jose, CA (US);
Hans J. Richter, Palo Alto, CA (US);
Dieter K. Weller, San Jose, CA (US);
HGST Netherlands B.V., Amsterdam, NL;
Abstract
According to one embodiment, a magnetic recording medium includes: a substrate, a seed layer positioned above the substrate, and a magnetic recording layer structure positioned above the seed layer. The magnetic recording layer structure includes: a first magnetic recording layer having a plurality of FePtCu magnetic grains and a first segregant, and a second magnetic recording layer positioned above the first magnetic recording layer, the second magnetic recording layer having a plurality of FePt magnetic grains and a second segregant, where a Curie temperature of the first magnetic recording layer is lower than a Curie temperature of the second magnetic recording layer.