GMI spectra of amorphous wires with different types of magnetic anisotropy in the core and the shell regionsстатья
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Аннотация:The giant magneto-impedance (GMI) spectra of amorphous wires with low magnetostriction are studied theoretically, based on the model of an amorphous wire consisting of a uniformly magnetized inner core with axial,anisotropy and an outer shell where the easy anisotropy axis may be circumferential or radial. It is shown that the presence of the uniformly magnetized core considerably modifies the GMI spectra of the wire with circumferential anisotropy for external magnetic field lower than the anisotropy field of the outer shell,, so that at zero magnetic field real component of wire impedance may be several times larger than the corresponding DC value. (C) 1999 Elsevier Science B.V. All rights reserved.