Patent ID: 6994797

Claim:
An oxide magnetic material including, as a main phase, a ferrite having a hexagonal M-type magnetoplumbite structure, the material comprising: A, which is at least one element selected from the group consisting of Sr, Ba, Pb and Ca; R, which is at least one element selected from the group consisting of the rare-earth elements (including Y) and Bi and which always includes La; and Fe, wherein the ratio of the constituents A, R and Fe of the oxide magnetic material is represented by (1−x)AO.(x/2)R 2 O 3 .nFe 2 O 3 , Formula 1: where 0.05≦x≦0.3, and 6.0<n≦6.7, and wherein an oxide of at least one element M selected from the group consisting of Co, Ni, Mn and Zn is added at 0.05 wt % to 2.0 wt % to the oxide magnetic material.