Magnetic recording head with an SOT device coupled with side shield
US12057146B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 19, 2023 |
| Grant date | Aug 6, 2024 |
| Priority date | — |
| Expiry date | Jul 19, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0024
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present disclosure generally relates to a magnetic recording head comprising a spintronic device. By electrically coupling the side shielding of the head (acting as current leads) to the spin Hall layer of the spintronic device, the current path length is optimally provided across the spin Hall layer as well as fitting within the space constraints of the overall head. In addition, by using an antiferromagnetic insulator as a spacer between the spin Hall layer and the magnetic spin torque layer of the spintronic device, electrically shunting into the magnetic spin torque layer is reduced, maximizing the spin torque and reducing loss of efficiency due to shunting. Thus, the magnetic recording head may utilize the energy assistance from the spintronic device without reducing the quality and reliability of the write head by running an undesirable current through critical components of the write head.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.