Magnetic write head for providing spin-torque-assisted write field enhancement
US10546603B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 13, 2019 |
| Grant date | Jan 28, 2020 |
| Priority date | — |
| Expiry date | Jun 13, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0024
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Disclosed herein are magnetic write heads and hard disk drives comprising such magnetic write heads. A magnetic head comprises a magnetic pole, a first shield separated from the magnetic pole at an air-bearing surface (ABS) of the magnetic head, a magnetic layer disposed between the magnetic pole and the first shield, wherein the magnetic layer comprises at least of iron, cobalt, or nickel, a first non-magnetic layer disposed between the magnetic pole and the magnetic layer, and a second non-magnetic layer disposed between the magnetic layer and the first shield, wherein the magnetic layer is the only magnetic layer at the ABS that is between the main pole and the first shield that is not adjacent to the main pole or the first shield.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.