Ulrich Memmert, Ming L. Yu
Applied Physics Letters
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+.
Ulrich Memmert, Ming L. Yu
Applied Physics Letters
Ming L. Yu
Radiation Effects and Defects in Solids
Ming L. Yu, Norton D. Lang, et al.
Physical Review Letters
Ming L. Yu, Benjamin N. Eldridge
Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films