Influence of uniaxial compressive stresses on magnetic properties across an Fe79.1Cr4.3B16.6 amorphous ferromagnetic ribbon

The influence of uniaxial compressive stresses on the energy of magnetoelastic anisotropy of an amorphous ferromagnetic alloy with composition Fe 79.1 Cr 4.3 B 16.6 has been investigated. Uniaxial pressure within a part of the sample cross-section was obtained by straightening out the ribbon annealed in a toroidal shape. The bulk value of the energy of magnetoelastic anisotropy was determined from the hysteresis loop traced with a fluxmeter. The energy of magnetoelastic anisotropy of surface layers ∼50 nm thick was determined from hysteresis loops traced with a hysteresigraph based on the transversal Kerr effect. The experimentally obtained values were found to be in good agreement with the calculated ones.