Fig. 15: Ferroelectricity related properties in PbTiO₃/CaTiO₃ superlattices.

a Tetragonality, b polarization, c dielectric constant, d piezoelectric coefficient, and e evolution of polarization vector as a function of CaTiO₃ volume fraction. Reproduced with permission from ref. ¹⁹¹. Copyright [2012] {American Physical Society}.