Perpendicular recording media with carbon grain isolation initiation layer
US10706883B2 · kind B2 · utility
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27Claims
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Key dates
| Filing date | Oct 20, 2017 |
| Grant date | Jul 7, 2020 |
| Priority date | — |
| Expiry date | May 5, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/8404
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Perpendicular magnetic recording media including a carbon grain isolation initiation layer for reducing intergranular exchange coupling in the recording layer are provided. In one such case, the media includes a substrate, a plurality of underlayers on the substrate, a grain isolation initiation layer (GIIL) on the plurality of underlayers, the GIIL including C, a metal, and an oxide, and a magnetic recording layer directly on the GIIL and including a non-ordered structure. In another case, a method of fabricating such magnetic media is provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.