Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5424786 | Surface Science | 2009 | 5 Pages |
Abstract
Low-energy ion scattering with monolayer sensitivity was applied to investigate ultrathin films of zinc on Pd(1Â 1Â 1). Uptake curves taken at 150Â K indicate the simultaneous growth of multilayers with negligible interlayer transport. Annealing experiments for two-monolayer films reveal a rapid decrease in the zinc content on the surface layer at temperatures above 300Â K, forming a metastable state with a Pd:Zn surface ratio of approx. 1:1 in the temperature region between 400 and 550Â K. This state is most easily explained as a slightly buckled p(2Â ÃÂ 1)-PdZn surface alloy, with Zn atoms located approx. 0.25Â Ã
above their Pd counterparts.
Related Topics
Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
Werner Stadlmayr, Simon Penner, Bernhard Klötzer, Norbert Memmel,