Multi-frequency microwave assisted magnetic recording apparatus and method
US9640203B1 · kind B1 · utility
16Cited by
13References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 23, 2016 |
| Grant date | May 2, 2017 |
| Priority date | — |
| Expiry date | Feb 23, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0024
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus comprises a recording transducer configured for microwave-assisted magnetic recording (MAMR) and a magnetic recording medium. The recording transducer comprises a write pole configured to generate a write magnetic field and a write-assist arrangement proximate the write pole. The write-assist arrangement is configured to generate a radio frequency assist magnetic field at a plurality of different frequencies. The magnetic recording medium comprises a plurality of tracks, wherein adjacent tracks of the medium have different ferromagnetic resonant frequencies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.