Magneto-dielectric materials, methods of making, and uses thereof
US11574752B2 · kind B2 · utility
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15References
25Claims
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Key dates
| Filing date | Jul 16, 2020 |
| Grant date | Feb 7, 2023 |
| Priority date | — |
| Expiry date | Feb 15, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F1/26
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A magnetic fiber comprises a core comprising a spinel ferrite of formula Me1-xMxFeyO4, wherein Me is Mg, Mn, Fe, Co, Ni, Cu, Zn, or a combination thereof, x=0 to 0.25, and y=1.5 to 2.5, wherein the core is solid or at least partially hollow; and a shell at least partially surrounding the core, and comprising a Me1-xMxFey alloy, wherein when the core is solid with Me=Ni and x=0 the magnetic fiber has a diameter of greater than 0.3 micrometer. A magneto-dielectric material having a magnetic loss tangent of less than or equal to 0.03 at 1 GHz comprises a polymer matrix; and a plurality of the magnetic fibers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.