MAGNETIZATION PROCESS AND MAGNETOIMPEDANCE IN, (110) [001]FESI3-PERCENT

The present article investigates the relation between magnetoimpedance (MI) and the evolution of the magnetic domain structure along the mag netization curves of commercial FeSi3% sheets cut at different angles with respect to the easy magnetization axis [001]. The role of the mag netocrystalline anisotropy on MI is studied and the correlation betwee n the basic features of the MI vs H and magnetization (M) vs H curves is established. From data obtained at appropriate frequency ranges, th e frequency dependence of the effective transverse differential permea bility is obtained. The frequency and field spectra of the impedance a llow the identification of the rotation of the magnetization as the ma in contribution of the magnetization processes to the MI effects in th e studied samples. (C) 1998 American Institute of Physics. [S0021-8979 (98)04419-3]