Theory of magnetic after-effects in ferromagnetic amorphous alloys

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Abstract
The magnetic after-effect spectrum of amorphous alloys is attributed to rearrangements of defect structures which are described by two-level systems. Using first-order reaction kinetics, the so-called stabilization potential of domain walls is determined for both ‘reversible’ and ‘irreversible’ after-effects. It is shown that by an appropriate averaging over the energy gap parameters and the activation energies, the relaxation phenomena in amorphous alloys can be described explicitly.