Apparatus and method for forming an overcoat
US12198741B2 · kind B2 · utility
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1References
20Claims
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Assignee
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Key dates
| Filing date | Nov 16, 2021 |
| Grant date | Jan 14, 2025 |
| Priority date | — |
| Expiry date | Nov 18, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2237/332
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Disclosed is an apparatus and method for forming a magnetic recording medium having a recording layer with a plurality of perpendicular magnetic domains configured to store data; and a carbon overcoat formed on the recording layer. The carbon overcoat is characterized by a sp3 carbon content greater than 70%, and a thickness of less than 1.2 nm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.