Magnetic thin film head with heat-assisted write section and hard disk drive incorporating same
US7310206B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 28, 2004 |
| Grant date | Dec 18, 2007 |
| Priority date | — |
| Expiry date | Jan 31, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A thin film magnetic read/write head for use in magnetic data storage systems to enable writing of data to a magnetic data storage medium with the assistance of laser heating. The read/write head allows magnetic reading of data from the storage medium, and thermally assisted magnetic writing of data on the storage medium. A waveguide is provided in a write gap in the form of an optical circuit having a plurality of inputs and a single output at the air bearing surface (ABS) for concentrating laser light used for heating the storage medium during the write operation. The thermally assisted magnetic writing improves the thermal stability of the recorded data and usefulness thereof throughout a wide temperature range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.