Figure 5
(a) Stored energy density, (b) recoverable energy density, and (c) storage efficiency in the BTO and PSN capacitors. Finally, we note that also polycrystalline FE films often exhibit relatively slim and sloped polarization-field loops. However, compared to the thermally strained BTO films, significantly smaller polarization and larger coercive fields are obtained in polycrystalline BTO films (Supplementary Fig. S13).
