Composite hexagonal ferrite materials
AssigneeAllumax TTI, LLC
InventorsMichael David Hill, Srinivas Polisetty, Constance M. Griffith
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Abstract
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.
Claims18
A method of forming a composite hexagonal ferrite material, the method comprising combining a base y-phase hexagonal ferrite composition having a formula Sr2−2xNa2xZrxCo2−xFe12O22 or Sr2−xNaxInxCo2−xFe12O22, 0<x<1 at least partially with a doped-in z-phase hexagonal ferrite composition having a formula Sr3-x′-y′Bax′Nay′Co2−y′Iny′Fe24O41, 0<x′<3 and 0<y′<1.
A method of forming a composite hexagonal ferrite material, the method comprising combining a base y-phase hexagonal ferrite composition, the base y-phase hexagonal ferrite composition having a formula Sr2−x′Nax′Inx′Co2−x′Fe12O22, 0<x′<1 at least partially with 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 Sr3-x-2yBaxNa2yCo2−yZryFe24O41, or Sr3-x-yBaxNayCo2−yInyFe24O41, 0<x<3, and 0<y<1.
A method of forming a composite hexagonal ferrite material, the method comprising combining a base y-phase hexagonal ferrite composition having a formula Sr2−x′Nax′Co2−x′Scx′Fe12O22, 0<x′<1 at least partially with 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 Sr3-x-yBaxNayCo2−yScyFe24O41, 0<x<3, 0<y<1.5.
A method of forming a composite hexagonal ferrite material, the method comprising combining a base y-phase hexagonal ferrite composition having a formula Sr2−xNaxInxCo2−xFe12O22 , 0<x<1 at least partially with a doped-in z-phase hexagonal ferrite composition to form the composite hexagonal ferrite material.
A method of forming a composite hexagonal ferrite material, the method comprising combining a base y-phase hexagonal ferrite composition at least partially with 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 Sr3-x-yBaxNayCo2−yInyFe24O41, 0<x<3, and 0<y<1.
Dependencies are inferred from the claim text.