Magnetic head, magnetic recording method and apparatus for controlling magnetic head with spin torque oscillator in a disk drive
US9275672B2 · kind B2 · utility
87Cited by
5References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 8, 2013 |
| Grant date | Mar 1, 2016 |
| Priority date | — |
| Expiry date | Feb 8, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0024
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A microwave assisted magnetic recording head includes a recording magnetic pole unit that produces a recording field for writing to a perpendicular magnetic recording medium, and a high-frequency magnetic field oscillator that produces a high-frequency magnetic field. The recording magnetic pole unit includes a magnetic core with a write gap portion at which a main recording field component is concentrated, and the high-frequency magnetic field oscillator is disposed in the write gap.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.