| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an Mn-Zn-Ni based ferrite having both of low magnetic loss and high saturation magnetic density. <P>SOLUTION: The Mn-Zn-Ni based ferrite contains Fe<SB>2</SB>O<SB>3</SB>, ZnO, NiO and MnO as basic components and the composition comprises >60-68 mol% Fe<SB>2</SB>O<SB>3</SB>, >8-16 mol% ZnO, 3-12 mol% NiO and the balance MnO and further contains 0.005-0.05 mass% SiO<SB>2</SB>, 0.020-0.20 mol% CaO and one or more kinds selected from Ta<SB>2</SB>O<SB>5</SB>in a range of 0.0050-0.10 mass%, ZrO<SB>2</SB>in a range of 0.010-0.15 mass%, Nb<SB>2</SB>O<SB>5</SB>in a range of 0.0050-0.05 mass%, V<SB>2</SB>O<SB>5</SB>in a range of 0.001-0.05 mass%, HfO<SB>2</SB>in a range of 0.0050-0.050 mass%, TiO<SB>2</SB>in a range of 0.010-0.30 mass% and SnO<SB>2</SB>in a range of 0.010-2.0 mass%. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
