Metallic glass alloy

特許 権利維持 PROBLEM TO BE SOLVED: To provide a Co-based metallic glass alloy which can exist stably as metallic glass and can exhibit excellent magnetic properties in a region from low frequency to high frequency, a high-performance magnetic core composed of the Co-based metallic glass alloy, a high-performance electromagnetic transducer having the magnetic core and a clock. ; SOLUTION: An electromagnetic transducer 2 has a magnetic core 1 and a conducting wire (coil) 43 wound into a plurality of layers around a winding part 40 of this magnetic core 1.