Abstract
Comparing the magnetic resonance absorption spectra with the data on structure and magnetic properties of amorphous Fe67Cr18B15 samples, we have shown that a randomly inhomogeneous medium of amorphous alloy is multiphase. The presence of two types of samples with a different clusterized structure and the use of ion (Ar+) irradiation in the experiment contributed the observation of four main phases with different magnetic properties. The main α-(Fe,Cr) phase contains large clusters D<400 Å in size with a tendency to phase separation of iron (α-Fe) and chromium (α-Cr) under irradiation, which enhances the competitive FM and AFM magnetic interactions and increases the intensity of absorption lines related to α-Fe and α-Cr. In the samples with a developed cluster system, the phase of Fe3B (D<100 Å) interacting with the α-(Fe,Cr) phase is detected in the resonance absorption spectra only when these groupings are isolated. The fourth phase represented by precluster groupings disappears under irradiation.
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