Race track magnetic memory device and writing method thereof
US11302373B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 21, 2020 |
| Grant date | Apr 12, 2022 |
| Priority date | — |
| Expiry date | Oct 21, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N52/80
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A race track magnetic memory device includes a magnetic fine wire having a plurality of magnetic domains, a magnetic tunnel junction element comprising a pinned layer and an insulating layer, and a spin-orbit torque (SOT) generator. An easy axis of the magnetic fine wire is substantially perpendicular to a contact surface of the magnetic fine wire and the SOT generator. The magnetic tunnel junction element and the SOT generator are disposed on a magnetic domain write region of the magnetic fine wire. Data is written by generating spin-transfer torque at magnetization of the magnetic domain write region by flowing a first current in the magnetic tunnel junction element and by generating spin-orbit torque at the magnetization of the magnetic domain write region by flowing a second current in the SOT generator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.