Abstract
The electronic structure of crystalline Fe and amorphous alloys Fe 80B 20 and Fe 86B 14 is studied by using the XPS technique. The valence band spectra (VBS) of amorphous alloys are similar to that of crystalline iron; the core-level energies are the same as for pure elements and the metallic nature of Fe is retained. After annealing in the crystallization temperature range, new features in the VBS and core-level shifts were observed. This effect is, we suppose, due to the reaction with oxygen dissolved in the surface region of the Fe-B alloy. The different effects of annealing on XPS spectra observed for both compositions are connected with their different mechanisms of crystallization.
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