Higher areal density non-local spin orbit torque (SOT) writer with topological insulator materials
US12354627B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 3, 2023 |
| Grant date | Jul 8, 2025 |
| Priority date | — |
| Expiry date | Aug 3, 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 media drive comprising a magnetic recording head. The magnetic recording head comprises a main pole disposed at a media facing surface (MFS), a shield disposed at the MFS, a spin blocking layer disposed between the shield and the main pole, at least one non-magnetic layer disposed between the main pole and the shield, the at least one non-magnetic layer being disposed at the MFS, and at least one spin orbit torque (SOT) layer disposed over the at least one non-magnetic layer, the SOT layer being recessed a distance of about 20 nm to about 100 nm from the MFS. A ratio of a length of the SOT layer to a thickness of the SOT layer is greater than 1. The at least one SOT layer comprises BiSb.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.