Abstract
57Fe conversion electron Mossbauer spectroscopy (CEMS) and X-ray diffractometry (XRD) were applied to study radiation effects on Fe-Ni-Cr electrodeposited alloys and vacuum deposited multilayers. As an effect of irradiation new sextet and doublet components appear in the CEM spectra of irradiated multilayers. They correspond to the highly disordered microcrystalline ferromagnetic and paramagnetic metastable phases formed in Fe-Ni-Cr alloys. Although these phases never occur in thermally prepared alloys, they are similar to those observed in electrodeposited Fe-Ni-Cr coatings of the same composition [1],[2]. The metastability of the phases was also shown by aging of the irradiated multilayers. Small but significant dose dependent changes were observed in the CEM spectra of irradiated electrodeposits existing in the form of amorphous or microcrystalline paramagnetic solid solution phase. This finding can be discussed in terms of irradiation induced change in the short range order and phase composition due to irradiation of the alloys.
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