Abstract
An electrodeposited Zn-Ni alloy coating (Ni 15.3 at.%) has been investigated by ultraviolet and x-ray photoelectron spectroscopies in order to elucidate the electronic structure. The Ni 3d band of the alloy coating has 1-eV-higher binding energy and narrower width compared with that in Ni metal. The Ni 2p main line in the alloy coating is also narrower and less asymmetric. The Ni 2p two-hole satellite in the alloy coating locates at 7.5 eV below the main line and is weak in relative intensity. These results suggest that the Ni 3d band is filled by a charge transfer from Zn and pulled down below the Fermi level, leading to low density of states of the band at the Fermi level. It is also found that a 9-eV-energy-loss peak of Zn is weaker in the alloy coating than Zn metal.
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