抄録
The surface structure of reconstructed Pt(211) has been studied using surface x -ray diffraction (SXD). Pt(211) reconstructs to (2 x 1) structure after annealing to 1400 K, whereas the surface has (1 x 1) structure after annealing at T 1200 K. Crystallographic analysis of the x-ray diffraction from the reconstructed surface shows a 2-missing-row structure. The space between the 1st and 2nd layers is contracted by 16 % compared with that of bulk-terminated Pt(211). The multilayer relaxation occurs between the topmost and the 5th layer. The optimized structure of the (2 x 1)-reconstructed surface is different from the structure predicted by DFT calculations.
