| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a soft magnetic thin band in which the squareness of magnetic flux density-a magnetization curve is high in a relatively low magnetic field region, particularly, of ≤500 A/m. <P>SOLUTION: As the soft magnetic thin band, the one having a thickness of ≤100 μm, having a mother phase texture 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, and also having an amorphous layer on the surface side of the mother phase texture is used. As the soft magnetic thin band, the one expressed by compositional formula: Fe<SB>100-x-y</SB>Cu<SB>x</SB>X<SB>y</SB>(wherein, X denotes one or more kinds of elements selected from B, Si, S, C, P, Al, Ge, Ga and Be and, by atom%, 0≤x≤5 and 10≤y≤24 are satisfied) is preferably used. <P>COPYRIGHT: (C)2009,JPO&INPIT |
