MRS Fall Meeting & Exhibit
We have used thermal desorption spectroscopy to carry out a comparative study of potassium adsorption on Al(111) and on the fivefold Al-Pd-Mn surface. Potassium adsorption on the quasicrystal was found to be different than on Al(111). The potassium monolayer desorbed from fivefold Al-Pd-Mn at lower temperatures than from Al(111). Potassium is known to form a dense monolayer on Al(111), with an ideal coverage of 0.33, but for the monolayer on fivefold Al Pd Mn we find that the saturation coverage is only one twelfth.
Materials Research Society
Wehner, Barbara I.; Anderegg, James W.; Jenks, Cynthia J.; Ross, Amy R.; Lograsso, Thomas A.; Diehl, Renee D.; and Thiel, Patricia A., "TDS Study of Potassium Adsorption on Al(111) and fivefold Al-Pd-Mn" (2000). Ames Laboratory Conference Papers, Posters, and Presentations. 45.