Figure 3

XPS spectra of the O1s core level line for the, (a) ZTO, 0.3 SZTO and 0.5 SZTO films and relative ratio of OII peak (OII/Ototal) as a function of Si ratio. (b) The relative concentration of OII peak in SZTO films as a function of Si ratio. All calculations are performed based on an area integration of each O1s peak.