Patent ID: 8029921

Claim:
A semiconductor device comprising: a ferrite layer; a wide bandgap semiconductor material layer, the wide bandgap semiconductor material comprising one of SiC, GaN, AlN, BN, ZnO, and diamond; and a buffer layer comprising a plurality of interwoven oxide and hexaferrite layers disposed between said ferrite layer and said wide bandgap semiconductor material layer, the oxide layer comprising one of magnesium oxide, aluminum oxide, sapphire, strontium titanium oxide, barium titanium oxide, a first surface of the buffer layer being in direct contact with said ferrite layer and a second surface of the buffer layer opposite the first surface being in direct contact with said wide bandgap semiconductor material layer; wherein said buffer layer reduces strain at an interface between said ferrite layer and said wide bandgap semiconductor material layer; and wherein a configuration of said buffer layer between said ferrite layer and said wide bandgap semiconductor material layer produces a crystalline quality device suitable for use in at least one of a microwave and a millimeter-wave application.