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:
Feb. 18, 2020
Filed:
Jun. 01, 2017
Fuji Electric Co., Ltd., Kawasaki-shi, JP;
Tohoku University, Sendai-shi, JP;
Hiroyasu Kataoka, Matsumoto, JP;
Hiroto Kikuchi, Matsumoto, JP;
Akira Furuta, Matsumoto, JP;
Hitoshi Nakata, Matsumoto, JP;
Tomohiro Moriya, Matsumoto, JP;
Takehito Shimatsu, Sendai, JP;
Fuji Electric Co., Ltd., Kanagawa, JP;
Abstract
The purpose of the present invention is to provide a magnetic recording medium capable of reducing the surface roughness of the magnetic recording layer without adversely affecting the magnetic properties of the magnetic recording layer. The magnetic recording medium of the present invention includes a substrate, a seed layer on the substrate, and a magnetic recording layer on the seed layer, wherein the seed layer has a structure of: (a) a spinel structure consisting of Mg, Cr and O; (b) a spinel structure consisting of Zn, Fe and O; or (c) an inverse spinel structure consisting of Mg, Ti and O.