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. 14, 2015
Filed:
Apr. 30, 2013
Applicant:
Showa Denko K.k., Minato-ku, Tokyo, JP;
Inventors:
Tetsuya Kanbe, Ichihara, JP;
Kazuya Niwa, Ichihara, JP;
Yuji Murakami, Ichihara, JP;
Lei Zhang, Ichihara, JP;
Assignee:
Showa Denko K.K., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 11/00 (2006.01); G11B 5/82 (2006.01); G11B 5/706 (2006.01); G11B 5/738 (2006.01); G11B 5/09 (2006.01); G11B 5/48 (2006.01); G11B 5/00 (2006.01);
U.S. Cl.
CPC ...
G11B 5/738 (2013.01); G11B 5/09 (2013.01); G11B 5/4866 (2013.01); G11B 2005/0021 (2013.01);
Abstract
A thermally assisted magnetic recording medium () includes a substrate (), an underlayer () that is formed above the substrate (), and a magnetic layer () that is formed on the underlayer () and contains an alloy having an L1structure as a main component. The underlayer () is formed by continuously laminating a first underlayer () having a BCC structure with a lattice constant that is 0.302 to 0.332 nm, a second underlayer () that has a NaCl structure including C, and a third underlayer () that is composed of MgO.