Method for improving magnetic properties of metallic glass ribbon

摘要

The soft magnetic properties of metallic glass ribbon are improved by removing at least a part of the surface before annealing. The magnetic alloy ribbon is prepared by chill block casting, after which the regions of the ribbon surface that adjoined but did not contact the chill block are removed. After being wound into a toroidal core and annealed, the material shows lower coercive force and core loss and higher remanence as compared with material from whose surface the out-of-contact regions were not removed.