A dynamic magnetization process in FeCoSiB amorphous wires is an attractive phenomenon. For example, the magneto-impedance (MI) effect[1] is expected to be utilized for sensitive magnetic sensors. We have studied the dynamic magnetization process by applying an AC circumferential magnetic field h_(θ) under various bias fields H_(ex) [2]. As shown loci of magnetization vector in fig.2, a rotational mode of magnetization takes place except for a case of H_(ex)=0 Oe. Especially, under the condition H_(ex)=1.02 Oe, the locus shows hysteresis. In this paper, we investigate how the dynamic magnetization process progresses as the magnetic field h_(θ) varies with time in order to discuss the mechanism of hysteresis occurred under the condition H_(ex)=1.02 Oe.
展开▼
