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Bimetallic surfaces formed by the evaporation of Fe onto a Pt(111) single crystal at 350 K in ultrahigh vacuum were examined by X-ray electron spectroscopy, low energy electron diffraction (LEED), and low energy ion scattering. Some alloying occurs upon deposition, but heating thick Fe films to 600-850 K causes diffusion of Fe into the near-surface region and forms an alloy layer at the surface which...
The presence of an Au surfactant overlayer allows the growth of high-quality Fe thin layers on Au(100) at 420 K to a depth of at least 70 . The surfactant layer can be removed from the surface by gentle ion sputtering. After this removal, Au is still found within the Fe film, as judged by a 0.3 eV shift to lower binding energies of the Au 4f photoemission peak. Quantification of the XPS signal indicates...
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