| 摘要 |
A ferrite material having a high Q value and also having a small absolute value of alphamuir in a wide temperature range between -40° C. and 160° C. A ferrite material, which comprises, as main constituents, 45.5 to 48 mol % of Fe2O3, 5 to 10.5 mol % of CuO, 26 to 30 mol % of ZnO, and the balance substantially being NiO, and further comprises, as an additive, cobalt oxide within a range between 0.005 and 0.045 wt % in terms of CoO. The ferrite material of the present invention has properties such as each of the absolute value of alphamuir-40~20 and the absolute value of alphamuir20~160 of 3 ppm/° C. or less, and a Q value at 125 kHz of 170 or more.
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