| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a Mn-Co-Zn type ferrite having specific resistance increased by decreasing Fe<SP>2+</SP>content and coercive force remarkably decreased without deteriorating the specific resistance. <P>SOLUTION: The Mn-Co-Zn type ferrite contains ≥45.0 mol% and <50.0 mol% Fe<SB>2</SB>O<SB>3</SB>, ≥0.5 mol% and ≤4.0 mol% CoO and ≥3.0 mol% and <15.5 mol% ZnO and the balance being MnO as base components and each content of Cd, Pb, Sb, As and Se in the ferrite is controlled to <20 massppm. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
