Investigation of the role of oxygen induced segregation of Cu during Cu2O formation on Cu {1 0 0}, Ag/Cu {1 0 0} and Cu (Ag) alloy
In this work we have investigated in situ the nanoscale oxide formation on Cu {100}, Ag/Cu
{100} surface alloy and polycrystalline Cu (Ag) alloy. The experiments were conducted in
pure oxygen atmosphere (∼ 2mbar) as a function of surface temperature (320–473K). The
concentration of metallic Cu, Cu2O and CuO in the surface region was quantified by X-ray
photoelectron spectroscopy (XPS). Oxygen induced segregation of the alloy constituents in
the near-surface region, as well as the diffusion of oxygen towards the bulk, were …
{100} surface alloy and polycrystalline Cu (Ag) alloy. The experiments were conducted in
pure oxygen atmosphere (∼ 2mbar) as a function of surface temperature (320–473K). The
concentration of metallic Cu, Cu2O and CuO in the surface region was quantified by X-ray
photoelectron spectroscopy (XPS). Oxygen induced segregation of the alloy constituents in
the near-surface region, as well as the diffusion of oxygen towards the bulk, were …
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