Magnetic recording medium
US5908711A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 17, 1997 |
| Grant date | Jun 1, 1999 |
| Priority date | — |
| Expiry date | Jun 17, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/90
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a magnetic recording medium having a magnetic thin film formed on a nonmagnetic base film by vacuum evaporation, a noise can be reduced and hence a satisfactory error rate for the digital recording can be secured. A magnetic recording medium according to the present invention includes a nonmagnetic base film, and a magnetic layer formed on the nonmagnetic base film by oblique incident evaporation. A mean particle size a of a column grown on the nonmagnetic base film is set within the range of 10 nm.ltoreq.a.ltoreq.50 nm. A value .sigma./a is set within the range of .sigma./a.ltoreq.0.4 where .sigma. is a dispersion value of a particle-size distribution of the column.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.