Physics – Condensed Matter – Materials Science
Scientific paper
2007-02-08
Physics
Condensed Matter
Materials Science
This paper will appear in Phys.RevB, 2007
Scientific paper
X-ray reflectivity studies reveal atomic-level surface-segregation at the free surface of the eutectic Au71Sn29 liquid alloy. The surface-segregation extends up to three layers, in which the top layer is almost a pure monolayer of Sn, the second layer is almost a pure monolayer of Au and the third layer appears to be slightly enhanced in Au. Although the surface-segregation concentration profiles can be qualitatively accounted for by the theories of Defay-Prigogine and Strohl-King, they cannot satisfactorily account for the measured surface tension. PACS numbers: 61.20.-p, 61.10.-i, 68.03.-g
Balagurusamy Venkatachalapathy S. K.
Lin Binhua
Meron Mati
Pershan Peter S.
Shpyrko Oleg G.
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