Publication
Applied Physics Letters
Paper

Surface compositional modifications during O+2 bombardment of binary alloys

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Abstract

Surface compositional modifications of binary alloys during 15-keV O +2 bombardment under 45°incidence were studied using Auger electron spectroscopy under ultrahigh vacuum conditions. For A1-Ni, Cr-Ni, Fe-Ni, and Pd-Ni alloys, the reactive preferential sputtering by O +2 causes a surface enrichment of the alloy component which has the smaller metal-oxygen bond energy per metal atom. For Cu-Ni and Ag-Pd alloys, where oxidation by the O+2 beam was slight, the surface compositions after O+2 bombardment were qualitatively similar to those caused by nonreactive preferential sputtering with Ar+.

Date

01 Dec 1981

Publication

Applied Physics Letters

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