Abstract
The adsorption of O2 on α-CuAl(100) for small concentrations of aluminum has been studied at room temperature by means of AES and XPS. A strong long range influence of aluminum on the adsorption processes as compared to pure Cu(100) has been found, the surface composition of the alloys has been studied and different aspects of adsorption processes have been addressed. The enhanced rate of oxygen adsorption on the alloy is explained on the basis of a long range influence of aluminum atoms on copper sites.
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