Characterisation of Pt deposition on clean and oxidised Ni(1 1 0) surfaces

Coaxial impact collision ion scattering spectroscopy (CAICISS), X-ray photoelectron spectroscopy (XPS) and low energy electron diffraction (LEED) have been used to investigate the initial stages of Pt deposition on clean and oxidised Ni(1 1 0) surfaces. Pt deposition on the clean surface led to the formation of a Ni–Pt alloy in the surface region. During the oxidation of Ni(1 1 0), (2 × 1), (3 × 1) and (9 × 5) reconstructions were observed. Further oxidation led to the formation of a thick NiO film with a disordered surface. Subsequent Pt deposition led to the formation of a thin Pt film on top of the NiO substrate.