Multifferoic R-type hexaferrite, a composite and an article comprising the R-type hexaferrite, and a method of making the same

Abstract

In an aspect, an R-type ferrite has the formula: Me′3Me2TiFe12O25, wherein Me′ is at least one of Ba2+ or Sr2+ and Me is at least one of Co2+, Mg2+, Cu2+, or Zn2+. In another aspect, a composite or an article comprises the R-type ferrite. In yet another aspect, a method of making a R-type ferrite comprises milling ferrite precursor compounds comprising oxides of at least Fe, Ti, Me, and Me′, to form an oxide mixture; wherein Me′ comprises at least one of Ba2+ or Sr2+; Me is at least one of Co2+, Mg2+, Cu2+, or Zn2+; and calcining the oxide mixture in an oxygen or air atmosphere to form the R-type ferrite.

Dependencies are inferred from the claim text.