Abstract
The effect of magnetic field annealing methods on soft magnetic properties for nanocrystalline (Fe0.5Co0.5)73.5Si13.5B9Nb3Cu1 alloy was investigated. In contrast to nonmagnetic field annealing, the magnetic field annealing can obviously reduce saturation magnetostriction λs and increase effective magnetic anisotropy 〈K〉. Furthermore, the initial permeability μi of experimental samples can be enhanced significantly after magnetic field annealing. Different magnetic field annealing methods produced varying degrees of impact on the μi of samples, which is ascribed to the difference of obtained λs and 〈K〉. In three magnetic field annealing methods, the magnetic field nanocrystallization can manifest more effective magnetic field effect compared with other two magnetic field annealing methods and achieve more superior magnetic softness, the reason of which was also analyzed.
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