| 摘要 |
PROBLEM TO BE SOLVED: To provide an oxide magnetic material, that is improved with respect to the influence of ZrO2 and Y2O3 which are mixed in the material, when the material is crushed by using a wet internal circulation medium agitating mill and partially stabilized zirconia as media beads, coils, etc. SOLUTION: The oxide magnetic material is composed essentially of Fe2O3, ZnO, NiO, and CuO containing 0.007-0.028 wt.% Y2O3, 0.12-0.55 wt.% ZrO2, and 0.03-10.12 wt.% Bi2O3. |
