Figure 8

Evolution of (a) Pb 4f, (b) Zr 3d, (c) Ti 2p, (d) O 1s spectra for freshly prepared P⁽⁻⁾ poled PZT(001)–curves (I) and after two cycles of CO adsorption → thermally induced desorption–curves (II). Photon energies are the same as in Figs 2, 3 and 4.