Patent ID: 7837893

Claim:
An oxide-type, magnetic material based on ferrite having a hexagonal structure, comprising Ca, an R element which is at least one rare earth element indispensably including La, Ba, Fe and Co as indispensable elements, the composition ratios of Ca, R, Ba, Fe and Co being represented by the following general formula: Ca 1-x-y R x Ba y Fe 2n-z Co z (by atomic ratio), wherein (1-x-y), x, y, z and n are numbers representing the amounts of Ca, the R element, Ba and Co and a molar ratio, respectively, meeting the following conditions: 0.2≦x≦0.65, 0.001≦y≦0.2, 0.3≦1-x-y≦0.6, 0.03≦z≦0.65, and 4≦n≦7.