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:
Aug. 20, 2019
Filed:
Feb. 28, 2017
Applicant:
Fuji Electric Co., Ltd., Kawasaki-shi, JP;
Inventors:
Assignee:
FUJI ELECTRIC CO., LTD., Kawasaki-Shi, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/66 (2006.01); G11B 5/65 (2006.01); G11B 5/73 (2006.01);
U.S. Cl.
CPC ...
G11B 5/653 (2013.01); G11B 5/732 (2013.01);
Abstract
The present invention relates to a magnetic recording medium, and this magnetic recording medium includes at least a non-magnetic substrate and a magnetic recording layer. In the magnetic recording medium of the present invention, the magnetic recording layer includes an ordered alloy having an L1-ordered structure, includes Fe, Pt, and V, and has a composition of Pt>Fe. The magnetic recording layer preferably has a granular structure composed of magnetic crystal grains including the ordered alloy and a non-magnetic crystal grain boundary, and the non-magnetic crystal grain boundary includes V.