Characterization of native oxide layers on amorphous Fe73.5Si15.5B7Cu1Nb3 before and after high-energy heavy ion irradiation by X-ray photoelectron spectroscopy (XPS)
R. Jain et al., Characterization of native oxide layers on amorphous Fe73.5Si15.5B7Cu1Nb3 before and after high-energy heavy ion irradiation by X-ray photoelectron spectroscopy (XPS), MAT SCI E A, 297(1-2), 2001, pp. 105-110
The surface oxide layers formed in atmosphere at room temperature (native o
xide) on a FINEMET alloy Fe73.5Si15.5B7Cu1Nb3, before and after high energy
heavy ion (Ni+11, 150 MeV) irradiation, were characterized by X-ray photoe
lectron spectroscopy (XPS). The major cationic species in layers were found
to be Fe3+, B3+, Si4+, Nb2+/Nb4+ while Cu was present in the elemental for
m. The native oxide layer on the irradiated specimen contained higher amoun
ts of oxides of Si and B in comparison unirradiated specimen. After irradia
tion both Nb and Cu were found to be depleted on the surface. The thickness
of oxide layer formed on the surface is estimated to be approximately 25 a
nd 40 Angstrom on the virgin and irradiated specimen, respectively. (C) 200
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