Magnetic Properties of Co-Si-B Amorphous Wires Prepared by Quenching In-Rotating Water Technique

The authors measured the magnetic properties of Co-Si-B amorphous wire with negative magnetostriction, prepared by quenching in-rotating water, and results were compared with the properties of Fe wires with positive magnetostriction. The Co wire was found to exhibit large Barkhausen discontinuities as well as the Matteucci effect, as does Fe wire. It was also found that the Co wire has a bamboo-like domain pattern at the surface and has a reverse domain propagation mobility larger than the Fe wire.