| 摘要 |
PROBLEM TO BE SOLVED: To provide an oxide magnetic material which is capable of reducing its loss in a wide frequency range and a winding component reduced of its loss. SOLUTION: This oxide magnetic material contains 0.005 to 0.05 wt.% SiO2 , 0.01 to 0.1 wt.% CaO, 0.005 to 0.1 wt.% Nb2 O5 , and 0.01 to 0.5 wt.% TiO2 as additives in Mn-Zn ferrite consisting of 52.5 to 53.5 mol.% Fe2 O3 and 35.0 to 45.0 mol.% MnO as a main component composition. The average crystal grain size of its calcined product is controlled to 5 to 10 μm, and the specific resistance of the calcined product is equal to larger than 500 Ωcm. |
