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:
Sep. 14, 2021
Filed:
Feb. 27, 2019
Fuji Electric Co., Ltd., Kawasaki, JP;
Hiroyasu Kataoka, Matsumoto, JP;
Tsuyoshi Yoshizawa, Matsumoto, JP;
Tomohiro Moriya, Matsumoto, JP;
Shinji Uchida, Matsumoto, JP;
Hirohisa Oyama, Matsumoto, JP;
Takehito Shimatsu, Sendai, JP;
FUJI ELECTRIC CO., LTD., Kawasaki, JP;
Abstract
A magnetic recording medium with a reduced average grain diameter and reduced grain diameter dispersion is provided. A magnetic recording medium having a magnetic property (magnetic anisotropy energy) applicable as a magnetic recording medium is provided. It is a magnetic recording medium containing a substrate, a grain diameter control layer, a first seed layer, a second seed layer, and a magnetic recording layer containing an ordered alloy in this order, in which the second seed layer is composed of crystal grains having TiN as a main component, and a grain boundary material having at least one or more selected from the group consisting of metal oxides and carbon as a main component.