Ultrathin Pd and Pt Films on W(211)
Journal article, 2003

The transition metals Pd and Pt have, in bulk, approximately the same nearest neighbor distance as tungsten, so that ultrathin Pd or Pt films can be grown on W substrates without creating significant strain. In the present work we study ultrathin Pd and Pt films on the atomically rough W(211) surface by first-principles density-functional theory (DFT) methods. Previous experiments, summarized here, have shown that in films thicker than 1 physical monolayer (PML), tungsten atoms of the substrate diffuse into the film to create alloys. Both to confirm the alloy formation from theory and to help characterize the alloys we present studies of Pd and Pt films with included W atoms. The DFT results allow us to indicate the energetically preferred alloy structures.

Author

Jan Block

Chalmers, Applied Physics

J.J. Kolodziej

J.E. Rowe

T.E. Madey

Elsebeth Schröder

Chalmers, Applied Physics

Thin Solid Films

Vol. 428 47-

Subject Categories

Condensed Matter Physics

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Created

10/8/2017