Method for preparing high density magnetic recording medium
US5084152A · kind A · utility
16Cited by
4References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 2, 1990 |
| Grant date | Jan 28, 1992 |
| Priority date | — |
| Expiry date | Oct 2, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/851
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
RF sputtered CoCrTa film deposited on a thin Cr underlayer for longitudinal magnetic recording and the preparation method thereof are disclosed. The film exhibits a (1010) texture which provides a high coercivity of 1190 Oe. The high coercivity is obtained on a 200 A Cr underlayer with a low argon pressure of 4 mtorr and high substrate bias of -100 V.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.