抄録
Magnetic properties were investigated in die-drawn Fe-based, Fe-Co-based, and Co-based amorphous wires (50 μm diameter) that store residual stress caused by mechanical drawing. The characteristic of large Barkhausen dis-continuities (BHD) observed in as-quenched wires was de- stroyed in the die-drawn Fe-based wire but enhanced in the Co-based wire with negative magnetostriction. The BHD of die-drawn Co wire was observed in specimens as short as 8 mm, which are suitable for practical use in sensors. These BHD characteristic changes caused by die-drawing were associated with domain changes caused by magnetostrictive anisotropy. It was observed that the maze and bamboo domains of Fe and Co wire were reversed into bamboo and maze configurations, respectively, by die-drawing. It was also found that die-drawn wires with negative magnetostriction exhibited different domain configurations depending on the amplitude of magnetostriction.
