| 摘要 |
A magnetic core making use of an Fe-based amorphous alloy ribbon that simultaneously attains miniaturization and noise reduction through realization of high Bs; and an applied product making use of the same. There is provided a magnetic core making use of an Fe-based amorphous alloy ribbon, wherein the saturated magnetic flux density (Bs) of the Fe-based amorphous alloy ribbon is >=1.60 T and wherein the ratio between magnetic flux density at a core external magnetic field of 80 A/m (B80) and Bs of the Fe-based amorphous alloy ribbon, B80/Bs, is >=0.90.
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