| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a ferrite sintered body having high density and being excellent in initial magnetic permeability, high-frequency characteristics and volume resistivity and a method for manufacturing the ferrite sintered body. <P>SOLUTION: The ferrite sintered body of hexagonal Z-type ferrite contains 17-21 mol% BaO, 6-13 mol% CoO, the remainder being Fe<SB>2</SB>O<SB>3</SB>as its principal components; 0.05-1.0 mass% Li, based on the main components, in terms of Li<SB>2</SB>CO<SB>3</SB>; and 0.05-0.5 mass% Si, based on the main components, in terms of SiO<SB>2</SB>. The rate of a spinel-type ferrite phase to entire phases including a Z-type ferrite phase and the spinel-type ferrite phase in the ferrite sintered body is 5% or less in terms of an area ratio in the cross section of the sintered body. <P>COPYRIGHT: (C)2007,JPO&INPIT |
