Field ion microscopy was used to study the migration of individual Pd atoms on the (011) surface of Pt. It was found that the Pd atoms migrated along [0¯11] surface channels at temperatures ranging from 207 to 235K. The data could be described by:

D(cm2/s) = 0.0035 exp[-0.58(eV)/kT]

No cross-channel displacements were observed. Clusters of Pd atoms on the (011) surface tended to form stable (1 x 1) structures at temperatures below 300K. They did not reconstruct to give a so-called missing-row structure. When Pd adatoms were deposited on top of (1 x 1) Pd monolayers, they were found to diffuse in channels at a temperature of 167K.

G.L.Kellogg: Physical Review B, 1992, 45[24], 14354-7