Tapered write head for MAMR
US9135933B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 8, 2013 |
| Grant date | Sep 15, 2015 |
| Priority date | — |
| Expiry date | Nov 16, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0024
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Embodiments described herein provide an MAMR head structure which provides a magnetic recording device equipped with a high density recording magnetic head. Characteristic variations caused by misalignment of a main pole and a STO may be reduced because the STO may be aligned with a position on the main pole where the field intensity is enhanced. The enhanced field intensity may be provided by an angle of inclination θ1 of an inclined surface on which the STO may be formed when compared to an angle of inclination θ2 around the main pole in the region of the ABS. Further embodiments provide a method for producing an MAMR head in which an exposed surface of the main pole has an angle of inclination θ2 which is less than the angle of inclination θ1 for the inclined surface of the main pole where the STO is mounted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.