Diffusion of Pd adatoms and stability of Pd overlayers on the (011) surface of Pt

Journal Article · Mon Jun 15 00:00:00 EDT 1992 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.45.14354· OSTI ID:7111416

Kellogg, G L ^[1]

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1. Sandia National Laboratories, Albuquerque, New Mexico 87185 (United States)

Field-ion microscopy has been used to examine the migration of individual Pd atoms and the stability of Pd overlayers on the (011) surface of Pt. Pd atoms are found to migrate within the (0{bar 1}1) surface channels in the temperature range 207--235 K with an activation energy of 0.58{plus minus}0.05 eV. Cross-channel displacements are not observed. Clusters of Pd atoms on Pt (011) form stable (1{times}1) structures at temperatures below 300 K and do not reconstruct to the missing-row'' structure. Pd adatoms deposited on top of (1{times}1) Pd overlayers are found to diffuse in channel at a temperature of 167 K.

• DOE Contract Number: AC04-76DP00789
• OSTI ID: 7111416
• Journal Information: Physical Review, B: Condensed Matter; (United States), Vol. 45:24; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
PALLADIUM
DIFFUSION
PLATINUM
SURFACE PROPERTIES
ACTIVATION ENERGY
ION MICROSCOPY
STABILITY
TEMPERATURE RANGE 0065-0273 K
ELEMENTS
ENERGY
METALS
MICROSCOPY
PLATINUM METALS
TEMPERATURE RANGE
TRANSITION ELEMENTS
360104* - Metals & Alloys- Physical Properties