Magnetic materials with high curie temperatures and dielectric constants
AssigneeSkyworks Solutions, Inc.
InventorsMichael David Hill, David Bowie Cruickshank
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Abstract
Disclosed herein are ceramic materials, such as bismuth substituted garnets, which can have high curie temperatures and high dielectric constants. In certain implementations, indium can be incorporated into the ceramic to improve certain properties and to avoid calcium compensation. The ceramic materials disclosed herein can be particular advantageous for below resonance applications.
Claims20
A ceramic material with low temperature sensitivity, the ceramic material comprising a composition of (Y, Gd)1−x−2yBixCa2yFe1−z−yInzVyO12 and having a dielectric constant of at least 25.
A ceramic material with low temperature sensitivity, the ceramic material comprising a composition of (Y, Gd)1−x−2yBixCa2y+aFe1−z−y−aInzVyZraO12 and having a dielectric constant of at least 30.
A method of forming a synthetic garnet having temperature insensitivity, the method comprising:
- incorporating bismuth, calcium, indium, and vanadium into a crystal structure of a yttrium iron garnet structure to achieve the composition (Y, Gd)1−x−2yBixCa2yFe1−z−yInzVyO12 having a dielectric constant of at least 25.
Dependencies are inferred from the claim text.