Domain stabilized magneto-optic head
US7168081B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 29, 2003 |
| Grant date | Jan 23, 2007 |
| Priority date | — |
| Expiry date | Jan 4, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/3113
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magneto-optic head includes a magnetic layer formed to have a substantially stabilized magnetic domain configuration. The magnetic layer includes a set of magnetic domains that includes one or more magnetic domains that are oriented such that they are substantially parallel to a major axis of the magnetic layer. In exemplary embodiments, the magnetic layer is deposited over a non-magnetic substrate and patterned, e.g., etched, in such a way that ordered magnetic domains form within the magnetic layer. For example, the magnetic layer may be patterned to have a height and width-to-height aspect ratio that yields one or more magnetic domains that are oriented such that they are substantially parallel to a major axis of the magnetic layer. In some embodiments, two magnetic layers are antiferromagnetically exchange coupled such that each magnetic layer includes a magnetic domain that is oriented substantially parallel to the major axis of that magnetic layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.