Natural ferromagnetic resonance in cast amorphous magnetic microwires

Abstract

— In the present work, cast glass-coated amorphous microwire with metallic core and diameter varies from 0.5 to 25 μm is considered. The discovery of natural ferromagnetic resonance (NFMR) in amorphous microwires was preceded by their study with standard FMR methods. We have studied FMR and NFMR in amorphous glass-coated microwires with different residual stresses. The residual stresses determine the shift of the resonance field position, and this indicated magnetoelastic anisotropy from the wire surface region.