Abstract
This paper describes an experimental study of the intermetallic compound CuAl 2 using Auger electron spectroscopy (AES). Chemical effects in the CuAl 2 spectrum are observed corresponding to energy shifts of the Cu and Al peaks and the appearance of a new peak for the compound. These results are found to be in good agreement with those obtained using the technique of soft X-ray emission spectroscopy (SXES). The origin of the new peak appears to be a transition from a hybridised s-d band localized at the Cu site in the compound to an Al core state. This gives a band-like contribution to the CuAl 2 AES spectrum.
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