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. 2016 Oct 14;6:35301. doi: 10.1038/srep35301

Figure 8.

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.