Magnetic recording medium, method of producing the same, and magnetic storage apparatus
US7736769B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 3, 2006 |
| Grant date | Jun 15, 2010 |
| Priority date | — |
| Expiry date | Nov 3, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/82
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic recording medium including a substrate having a surface, an orientation control layer disposed above the surface of the substrate, an underlayer disposed above the orientation control layer, and a recording layer having an hcp crystal structure and disposed on a surface of the underlayer. The recording layer is epitaxially grown on the surface of the underlayer to define a plurality of crystal grains, wherein the crystal grains have c-axes that are inclined in a plurality of random directions, but wherein each random direction defines an angle with respect to the surface of the substrate that is within a range that is greater than 0 degrees and less than or equal to 30 degrees. A magnetic storage apparatus including such a magnetic recording medium is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.