Figure 6
From: Tuning piezoelectric properties through epitaxy of La2Ti2O7 and related thin films
PFM vertical amplitude (top left) and out-of-plane phase (top right), and lateral amplitude (bottom left) and in-plane phase (bottom right) of LTO films deposited on (a) Nb:STO(001) and (b) Nb:STO(110). A phase value of 180° indicates polarization out of the plane of the image (top right images) or vertically in the plane of the image (bottom right images).
