Spin torque layer in side gap for improved field and cross track field gradient
US10706877B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 14, 2019 |
| Grant date | Jul 7, 2020 |
| Priority date | — |
| Expiry date | Feb 14, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0024
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic recording head is disclosed having a main pole, a shield hot seed layer positioned at a first side of the main pole, a first material positioned at both a second side and a third side of the main pole, the first material connected to the main pole, a second material positioned adjacent to the first material on the second side and the third side of the main pole, the second material comprised of a spin torque layer, a third material positioned adjacent to the second material on the second side and the third side of the main pole, a fourth material positioned adjacent to the third material on the second side and the third side of the main pole and a side shield connected on an exterior side of the fourth material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.