Abstract
The adsorption of Pb on Ni(100) has been characterized by Auger electron spectroscopy, low energy electron diffraction, measurements of work function changes (Δφ) and crystal current measurements (ic). The lead layer grows by the Stranski-Krastanov mode. In the submonolayer range four well-organized two-dimensional phases have been found (C(2 × 2), ▪, ▪ and ▪. Isothermal desorption experiments show two distinct zero-order kinetics: the first one is connected to the desorption of the ▪ and ▪ phases, the second one to the desorption of the ▪ phase. In the range of temperature investigated (591–613 K) no desorption of the C(2 × 2) phase is found.
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