Adsorption of cobalt on the ten-fold surface of d-Al₇₂Ni₁₁Co₁₇ and on the five-fold surface of i-Al₇₀Pd₂₁Mn₉

Joseph Anthony Smerdon (1) , Julian Ledieu (2) , Jon Hoeft (3) , Dennis Reid (1) , Lisa H Wearing (1) , Renee Diehl (4) , Ronan Mcgrath (1) , Thomas Lograsso (5) , Amy Ross (5)

1 Surface Science Research Centre
2 ENSMN - Ecole Nationale Supérieure des Mines de Nancy
3 Institut für Experimentalphysik [Hamburg]
4 Physics
5 Ames Laboratory [Ames, USA]

The adsorption behaviour of Co on the ten-fold surface of d-Al₇₂Ni₁₁Co₁₇ and on the five-fold surface of i-Al₇₀Pd₂₁Mn₉ has been studied using scanning tunneling microscopy (STM), Auger electron spectroscopy (AES) and low-energy electron diffraction (LEED). The analysis of a distinctive quasiperiodic LEED pattern for coverages from 3 - 30 ML of Co on d-Al₇₂Ni₁₁Co₁₇ suggests that the Co forms in a pseudomorphic row structure composed of domains of Fibonacci spaced rows having a periodic lattice parameter along the rows of 2.5 ± 0.1 Å. The same structure, though less well-ordered and with a larger lattice parameter, is formed on the five-fold surface of i-Al₇₀Pd₂₁Mn₉.

Mots clés: Physical Sciences

Joseph Anthony Smerdon, Julian Ledieu, Jon Hoeft, Dennis Reid, Lisa H Wearing, et al.. Adsorption of cobalt on the ten-fold surface of d-Al₇₂Ni₁₁Co₁₇ and on the five-fold surface of i-Al₇₀Pd₂₁Mn₉. Philosophical Magazine, 2006, 86 (06-08), pp.841-847. ⟨10.1080/14786430500263447⟩. ⟨hal-00513583⟩