CoCrPtB alloys with increased boron content and method of producing same
US6183832A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 14, 1998 |
| Grant date | Feb 6, 2001 |
| Priority date | — |
| Expiry date | Oct 14, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/265
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic layer structure with a layer of cobalt-chromium-platinum-boron composite alloy containing 10% to 20% B in the magnetic layer. The useful magnetic properties of the magnetic layer structure are achieved by the incorporation of a nucleation layer prior to the deposition of the magnetic layer. The resultant magnetic layer structures have coercivity H.sub.c values in between 2,000 and 5,000 Oe, grain sizes between 30 and 200 Angstroms and anisotropic crystallographic orientation with the c-axis of the cobalt-chromium-platinum-boron in the plane of the medium. These magnetic layer structures are suitable for magnetic data storage devices including magnetic disks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.