Invention Grant
- Patent Title: Magnetic recording medium having magnetic layer with a granular structure
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Application No.: US15994470Application Date: 2018-05-31
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Publication No.: US11087794B2Publication Date: 2021-08-10
- Inventor: Tomohiro Moriya , Hitoshi Nakata , Takehito Shimatsu
- Applicant: FUJI ELECTRIC CO., LTD.
- Applicant Address: JP Kawasaki
- Assignee: FUJI ELECTRIC CO., LTD.
- Current Assignee: FUJI ELECTRIC CO., LTD.
- Current Assignee Address: JP Kawasaki
- Agency: Rabin & Berdo, P.C.
- Priority: JPJP2016-124731 20160623
- Main IPC: G11B5/73
- IPC: G11B5/73 ; G11B5/65 ; G11B5/66 ; G11B5/706

Abstract:
The invention provides a magnetic recording medium including a magnetic layer or a magnetic recording layer having a granular structure in which magnetic crystal grains are well separated from each other. The magnetic recording medium includes a substrate, a seed layer, and a magnetic recording layer, wherein the magnetic recording layer includes a first magnetic layer which is a continuous film consisting of an ordered alloy, and a second magnetic layer having a granular structure consisting of magnetic crystal grains consisting of an ordered alloy and a non-magnetic crystal grain boundary, and the seed layer consists of a material selected from the group consisting of an NaCl-type compound, a spinel-type compound, and a perovskite-type compound.
Public/Granted literature
- US20180286445A1 MAGNETIC RECORDING MEDIUM Public/Granted day:2018-10-04
Information query
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