Magnetic recording medium having an enhanced diamond bonding ratio and a method for the manufacture thereof
US5614314A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 28, 1993 |
| Grant date | Mar 25, 1997 |
| Priority date | — |
| Expiry date | Oct 28, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/30
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic recording medium and a method for the manufacture thereof are disclosed that are less likely to result in head crushing even if high-hardness slider materials are used, and which is formed with a carbon protective layer that has good anti-CSS characteristics. The carbon protective layer is formed using a sputtering gas mixed with methane at a greater amount than predetermined to form a carbon protective layer in which diamond bonds are present at a higher ratio than graphite bonds, and polymeric bonds are present to an adequate degree. A magnetic recording medium having such a carbon protective layer shows a very high durability in a CSS cycle test.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.