抄録
The influence of Si, B contents and magnetic field annealing on magnetic properties of ultrafine crystalline (Fe-Cu1-Nb3)-Si-B quasi-ternary alloys have been studied. The alloy containing 13.5 at%Si and 9 at%B shows the most excellent soft magnetic properties. In this alloy, the relative permeability at 1 kHz is about 1×105. On the other hand, the alloys containing about 2 at%Si and 13 at%B show a high flux density of about 1.55 T and those containing about 17 at%Si and 5 at%B show nearly zero magnetostriction. Magnetic field annealing is very effective to improve hysteresis curves of these alloys for many applications.
