Large capacity disk and method for manufacturing the same
US6180202A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 3, 1998 |
| Grant date | Jan 30, 2001 |
| Priority date | — |
| Expiry date | Aug 3, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/90
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A large capacity disk in which information of not less than 50 Gbit can be stored and a method for manufacturing the same are provided. In the present invention, a disk for an apparatus for storing information of super high capacity, which can be mass produced at low costs, is manufactured by forming a Cr layer and a magnetic layer on the seed layer, using a three-dimensional island grown particle of nm scale as the seed layer without performing E-beam lithography. In the disk manufactured as mentioned above, it is possible to control the information storage capacity as desired since it is possible to control the size of the single domain, i.e., the bit according to deposition conditions. Also, the domains manufactured as mentioned above are not coupled with each other. Accordingly, the signal-to-noise ratio is high.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.