Figure 5
Comparison between two fits for a PbTiO3 thin film on a (001)-oriented SrTiO3 substrate. The measurement is in red and the simulation in blue. The simulation in the top part is with a constant lattice parameter, while the bottom part corresponds to a depth-varying c-axis value described with an exponential function. The respective film lattice parameters are shown as insets. This clearly demonstrates a better agreement between the measurement and the simulation when the depth-varying c-axis value is chosen. From Weymann et al. (2018). |