FMR investigation of the magnetic anisotropy in positive magnetostrictive amorphous glass-covered wires

The anisotropy distribution in Fe/sub 77.5/Si/sub 7.5/B/sub 15/ amorphous glass-covered wires and wires after glass removal is investigated by FMR measurements. The peaks of the FMR spectra allow the determination of easy axes and anisotropy fields. The anisotropy distribution changes with glass removal and applied stress. The results are explained by considering the magnetoelastic anisotropy of amorphous wires.