Initial growth of gold on nickel (110): surface alloying of immiscible metals

Initial growth of gold on nickel (110): surface alloying of immiscible metals

Atomic resolution scanning tunneling microscopy of Au deposited on Ni(110) shows that even though Au is completely insoluble in bulk Ni, it replaces Ni in the first surface layer forming a surface Au-Ni alloy and the squeezed out Ni atoms agglomerate in Ni islands on the surface. This picture is sup...

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Veröffentlicht in:Physical review letters 1993-08, Vol.71 (5), p.754-757
Hauptverfasser: Nielsen, L P, Besenbacher, F, Stensgaard, I, Laegsgaard, E, Engdahl, C, Stoltze, P, Jacobsen, K W, Norskov, J K
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container_end_page 757
container_issue 5
container_start_page 754
container_title Physical review letters
container_volume 71
creator Nielsen, L P
Besenbacher, F
Stensgaard, I
Laegsgaard, E
Engdahl, C
Stoltze, P
Jacobsen, K W
Norskov, J K
description Atomic resolution scanning tunneling microscopy of Au deposited on Ni(110) shows that even though Au is completely insoluble in bulk Ni, it replaces Ni in the first surface layer forming a surface Au-Ni alloy and the squeezed out Ni atoms agglomerate in Ni islands on the surface. This picture is supported by total energy calculations within the effective-medium theory, which also provides a detailed understanding of this surprising phenomenon.
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title Initial growth of gold on nickel (110): surface alloying of immiscible metals
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