Ferromagnetic resonance in cast microwires and its application for the non-contact diagnostics

Ferromagnetic resonance in glass-coated Fe-based cast amorphous microwires reveals large residual stresses appearing in the microwire core during casting. These stresses, together with magnetostriction, determine the magnetoelastic anisotropy. Ferromagnetic resonance frequency is affected, in addition to residual and internal stresses, by external stresses applied to the microwire or a composite containing it (so-called stress effect). The dependence of ferromagnetic resonance frequency on the deformation of microwires is proposed to be used in the distant diagnostics of dangerous deformations of critical infrastructure objects and in medical application.