Corrosive adsorption of Sn on the Pt(110)(1 x 2) surface

• Room temperature deposition of Sn on the Pt(110)(1 x 2) surface has been studied by scanning tunnelling microscopy and core level photoelectron spectroscopy. At low coverage Sri is found in three different configurations; as mobile adatoms in the valley of the missing-row reconstruction, as 1D-Pt-Sn-Pt- alloy chains forming local Pt3Sn(110)2 x 2 regions and finally as 3D alloy islands. At higher coverage these islands form a platinum rich alloy film, which is dissolved in the crystal upon annealing to 600 degreesC.

Nyckelord

platinum

tin

low index single crystal surfaces

alloys

photoelectron spectroscopy

scanning tunneling microscopy

scanning-tunneling-microscopy

photoelectron-spectroscopy

electronic-structure

alloy formation

pt(110)-(1x2) surface

growth-mechanism

pt(111) surface

leed

catalysts

interface

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