It was recalled that the Pt{100} surface reconstructed to give a quasi-hexagonal outermost layer, known as the (hex) phase and that the reconstruction could be lifted by chemisorption to give the so-called truncated bulk, or (1 x 1), structure. It was shown, using infra-red reflection-absorption spectroscopy that, at sufficiently low temperatures and low coverages, NO could be adsorbed on the (hex) surface without inducing the phase transition. At increased temperatures, the maximum NO coverage that still retained the (hex) phase decreased until, at 200K and above, adsorption immediately lifted the reconstruction.

The Lifting of the Pt{100} Surface Reconstruction by NO Adsorption. P.Gardner, M.Tüshaus, R.Martin, A.M.Bradshaw: Vacuum, 1990, 41[1-3], 304-6