Subsurface structure and magnetic parameters of Fe-Mo-Cu-B metallic glass

Subsurface properties of ⁵⁷Fe₈₁Mo₉Cu₁B₉ metallic glass were studied by conversion electron and conversion X-ray Mössbauer spectrometry. They were applied to both surfaces of the ribbons. Deviations in structural surface features are exhibited via different contents of crystalline phases, which were identified as bcc-Fe and magnetite. The presence of small ferromagnetic particles was also suggested from magnetic measurements. An influence of irradiation with 130-keV N⁺ ions on surface properties of the as-quenched alloy is also discussed.