| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a soft magnetic material having a reduced loss in high saturation magnetic flux density compared with a silicon steel sheet. <P>SOLUTION: As the soft magnetic thin band, the one having a host phase structure where crystal grains with a crystal grain size of ≤60 nm (excluding zero) are dispersed into an amorphous phase in ≥30% by a volume fraction at a position of 120 nm depth from the surface, and also having an amorphous layer within a width of 120 nm depth from the surface is used. As the soft magnetic thin band, the one expressed by compositional formula: Fe<SB>100-x-y</SB>A<SB>x</SB>X<SB>y</SB>(wherein, A denotes at least one or more kinds of elements selected from Cu and Au, and X denotes at least one or more kinds of elements selected from B, Si, S, C, P, Al, Ge, Ga and Be, and, by atom%, 0≤x≤5.0 and 10≤y≤24 are satisfied) is preferably used. <P>COPYRIGHT: (C)2009,JPO&INPIT |
