Iron-based superconducting permanent magnet and method of manufacture
US10395805B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 2, 2017 |
| Grant date | Aug 27, 2019 |
| Priority date | — |
| Expiry date | Oct 2, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N60/855
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention provides for polycrystalline superconducting permanent magnets which are synthesized of doped superconducting (AE) Fe2As2 compounds, where AE denotes an alkaline earth metal, such as Ba, Sr, Mg or Ca. The superconducting permanent magnets of the present invention can be magnetized in their superconducting state by induced currents, resulting in trapped magnetization that scales with the size of the bulk material. The magnitude of the trapped field has been demonstrated to be over 1 T and is predicted to be over 10 T if the technology is scaled, which is much higher than the capabilities of permanent magnets and other superconducting polycrystalline bulks currently known in the art.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.