Fe-based amorphous alloy ribbon for nanocrystalline soft magnetic alloy and magnetic parts

摘要

PROBLEM TO BE SOLVED: To realize an Fe base amorphous alloy thin strip for a nanocrystal soft magnetic alloy exhibiting excellent magnetic properties particularly in a low frequency region in the case a nanocrystal soft magnetic alloy is produced by heat treatment and to realize high capacity magnetic parts composed of the nanocrystal soft magnetic alloy. SOLUTION: In this Fe base amorphous alloy thin strip for a nanocrystal soft magnetic alloy produced by a single roll method, in the case the peak intensity value of a halo pattern corresponding to an amorphous phase in X-ray diffraction is defined as I1, and the peak intensity value of the (200) crystals in a bcc phase as I2, the peak intensity ratio of the X-ray diffraction on the side of the roll face in the alloy thin strip, i.e., I2/I1 is =0.5.