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. 03, 2023
Filed:
Apr. 05, 2022
Showa Denko K.k., Tokyo, JP;
Takayuki Fukushima, Chiba, JP;
Tomoo Shige, Chiba, JP;
Yuji Umemoto, Chiba, JP;
Kazuya Niwa, Chiba, JP;
SHOWA DENKO K.K., Tokyo, JP;
Abstract
A magnetic recording medium includes a substrate, and a magnetic recording layer including magnetic grains having an L1structure. The magnetic recording layer is (001) oriented, and a surface of growth of the magnetic recording layer includes a (001) plane, a (111) plane, and planes equivalent to the (111) plane. An area ratio of the (111) plane and the planes equivalent to the (111) plane, represented by (A+A)/(A+A+A), is in a range of 0.2 to 0.7, where Adenotes an area of the (111) plane, Adenotes an area of the planes equivalent to the (111) plane, and Adenotes an area of the (001) plane.