Composite hexagonal ferrite materials
US-10995034-B2 · May 4, 2021 · US
Composite hexagonal ferrite materials
US11613500B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11613500-B2 |
| Application number | US-202117218818-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 31, 2021 |
| Priority date | Aug 26, 2016 |
| Publication date | Mar 28, 2023 |
| Grant date | Mar 28, 2023 |
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Abstract
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Disclosed herein are embodiments of composite hexagonal ferrite materials formed from a combination of Y phase and Z phase hexagonal ferrite materials. Advantageously, embodiments of the material can have a high resonant frequency as well as a high permeability. In some embodiments, the materials can be useful for magnetodielectric antennas.
First claim
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What is claimed is: 1. A composite hexagonal ferrite material comprising: a base y-phase hexagonal ferrite composition having a formula Sr 2-2x Na 2x Zr x Co 2-x Fe 12 O 22 or Sr 2-x Na x In x Co 2-x Fe 12 O 22 , 0<x<1; and a doped-in z-phase hexagonal ferrite composition to form the composite hexagonal ferrite material, the doped-in z-phase hexagonal ferrite composition having a formula Sr 3-x′-y′ Ba x′ Na y′ Co 2-y′ In y′ Fe 24 O 41 , 0<x′<3 and 0<y′<1. 2. An antenna formed from the composite hexagonal ferrite material of claim 1 . 3. A composite hexagonal ferrite material comprising: a base y-phase hexagonal ferrite composition, the base y-phase hexagonal ferrite composition having a formula Sr 2-x′ Na x′ In x′ Co 2-x′ Fe 12 O 22 , 0<x′<1; and a doped-in z-phase hexagonal ferrite composition to form the composite hexagonal ferrite material, the doped-in z-phase hexagonal ferrite composition having a formula Sr 3-x-2y Ba x′ Na 2y Co 2-y Zr y Fe 24 O 41 or Sr 3-x-y Ba x Na y Co 2-y In y Fe 24 O 41 , 0<x<3, and 0<y<1. 4. An antenna formed from the composite hexagonal ferrite material of claim 3 . 5. A composite hexagonal ferrite material comprising: a base y-phase hexagonal ferrite composition having a formula Sr 2-x Na x Co 2-x Sc x Fe 12 O 22 , 0<x<1; and a doped-in z-phase hexagonal ferrite composition to form the composite hexagonal ferrite material, the doped-in z-phase hexagonal ferrite composition having a formula Sr 3-x-y Ba x Na y Co 2-y Sc y Fe 24 O 41 , 0<x<3, 0<y<1.5. 6. The composite hexagonal ferrite material of claim 5 wherein the composite hexagonal ferrite material includes two phases. 7. The composite hexagonal ferrite material of claim 5 wherein the composite hexagonal ferrite material has a real permeability of between 3 and 7 at 1 GHz. 8. The composite hexagonal ferrite material of claim 5 wherein the composite hexagonal ferrite material has a real permeability of greater than 6 at 1 GHz. 9. The composite hexagonal ferrite material of claim 5 wherein the y-phase hexagonal ferrite composition includes Sr 1.6 Na 0.4 Sc 0.4 Co 1.6 Fe 12 O 22 . 10. The composite hexagonal ferrite material of claim 5 wherein the doped-in z-phase hexagonal ferrite composition includes Ba 1.4 Sr 0.8 Na 0.8 Sc 0.8 Co 1.2 Fe 12 O 22 . 11. A composite hexagonal ferrite material comprising: a base y-phase hexagonal ferrite composition having a formula Sr 2-x Na x In x Co 2-x Fe 12 O 22 , 0<x<1; and a doped-in z-phase hexagonal ferrite composition to form the composite hexagonal ferrite material. 12. A composite hexagonal ferrite material comprising: a base y-phase hexagonal ferrite composition; and a doped-in z-phase hexagonal ferrite composition to form the composite hexagonal ferrite material, the doped-in z-phase hexagonal ferrite composition having a formula Sr 3-x-y Ba x Na y Co 2-y In y Fe 24 O 41 , 0<x<3, and 0<y<1. 13. The antenna of claim 2 wherein the antenna is part of a wireless device. 14. The antenna of claim 4 wherein the antenna is part of a wireless device. 15. An antenna formed from the composite hexagonal ferrite material of claim 5 . 16. The antenna of claim 15 wherein the antenna is part of a wireless device. 17. An antenna formed from the composite hexagonal ferrite material of claim 11 . 18. The antenna of claim 17 wherein the antenna is part of a wireless device. 19. An antenna formed from the composite hexagonal ferrite material of claim 12 . 20. The antenna of claim 19 wherein the antenna is part of a wireless device.
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Classifications
two phases having the same anion, e.g. both oxidic phases · CPC title
by unit-cell parameters, atom positions or structure diagrams · CPC title
containing rare earths, e.g. (La0.3Sr0.7)CoO3 · CPC title
Magnetic properties · CPC title
Compounds of calcium, strontium, or barium (C01F7/00 takes precedence) · CPC title
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Frequently asked questions
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- What does patent US11613500B2 cover?
- Disclosed herein are embodiments of composite hexagonal ferrite materials formed from a combination of Y phase and Z phase hexagonal ferrite materials. Advantageously, embodiments of the material can have a high resonant frequency as well as a high permeability. In some embodiments, the materials can be useful for magnetodielectric antennas.
- Who is the assignee on this patent?
- Skyworks Solutions Inc
- What technology area does this patent fall under?
- Primary CPC classification H01F1/11. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Mar 28 2023 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 6 related publications on this page (citations in our corpus or others sharing the same primary CPC).