Coercivity-enhanced iron nitride nanoparticles with high saturation magnetization
US12362082B2 · kind B2 · utility
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Key dates
| Filing date | May 22, 2020 |
| Grant date | Jul 15, 2025 |
| Priority date | — |
| Expiry date | Feb 21, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2235/85
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Iron nitride nanoparticles and magnet materials made from iron nitride nanoparticles are described. The iron nitride nanoparticles have a core and a shell morphology. The shell is configured to provide a means to nitride the core. The magnetic materials are characterized as having an Msat greater than about 160 emu/g and a coercivity greater than about 700 Oe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.