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Atomic-scale Observations of Alloying at the Cr-Fe(001) Interface



Angela Davies, Joseph A. Stroscio, Daniel T. Pierce, Robert Celotta


While much progress has been made using epitaxial growth of Fe/Cr/Fe structures to study magnetic exchange coupling, a number of anomalies have arisen in studies of this model system. Using scanning tunneling microscopy and spectroscopy to investigate Cr growth on Fe(001), we have identified a potential structural cause of these anomalies. We show that Cr growth under layer-by-layer conditions on Fe(001) leads to the formation of a Cr-Fe alloy. We exploit a Cr and Fe surface state to identify single Cr impurities in Fe and evaluate the alloy concentrations with increasing Cr coverage.
Physical Review Letters


Davies, A. , Stroscio, J. , Pierce, D. and Celotta, R. (1996), Atomic-scale Observations of Alloying at the Cr-Fe(001) Interface, Physical Review Letters, [online], (Accessed July 20, 2024)


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Created December 31, 1995, Updated October 12, 2021