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Straindashinduced enhanced solubility of Au in epitaxial films of Fe

AuthorsPastor, C. J.; Limones, C.; Hinarejos, J. J.; García Martínez, Jorge Manuel CSIC ORCID CVN ; Miranda, Rodolfo CSIC; Gómez-Goñi, J.; Ortega, J. E.; Abruña, H. D.
Low energy ion scattering (LEIS)
Low index single crystal surfaces
Magnetic films
Magnetic interfaces
Metal-metal magnetic thin film structures
Quantum wells
Scanning tunneling microscopy
Single crystal epitaxy
Surface segregation
X-ray photoelectron spectroscopy
Issue Date10-Aug-1996
CitationSurface Science 364(1): L505-L510 (1996)
AbstractThe 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 Å. 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 that the total atomic concentration of Au diluted within the Fe layer is 3%, i.e. much higher than the bulk solubility at 420 K. We suggest that relaxation of the strain causes the enhanced solubility of Au in the Fe layer.
Description6 páginas, 5 figuras.
Publisher version (URL)http://dx.doi.org/10.1016/0039-6028(96)00767-4
Appears in Collections:(IMN-CNM) Artículos
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