Abstract
The interaction of oxygen with Al(111) and Al adlayers (< 2.5 adlayers thickness) on W(110) is studied using metastable impact electron spectroscopy (MIES) and photoelectron spectroscopy (UPS). The coadsorption of Al and oxygen at a hot (725 K) W(110) surface is studied with the same techniques. Information on the electronic properties of the surfaces obtained in this way is linked to their structural properties via LEED measurements. It is concluded that alumina layers with excellent thermal and chemical properties can be produced by a coadsorption while the surface produced by oxygen sorption on the Al W(110) suface requires an additional heat treatment to become transformed into alumina.
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