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.
Claims19
A packaged radio frequency device comprising a housing and a ceramic material with low temperature sensitivity enclosed by the housing, the ceramic material including a composition of (Y or Gd)3−x−2yBixCa2yFe5−z−yInzVyO12, 0<x<1.75, 0<y<0.8, and 0<z<0.7.
A packaged radio frequency device comprising a housing and a ceramic material with low temperature sensitivity enclosed by the housing, the ceramic material including a composition of (Y or Gd)3−x−2yBixCa2y+aFe5−z−y−aInzVyZraO12, 0<x<1.75, 0<y<0.8, and 0<z+a<0.7.
Dependencies are inferred from the claim text.