Fig. 18: Schematic plots demonstrating the induced improper ferroelectricity in 1PbTiO3/1SrTiO3 superlattice. | npj Computational Materials

Fig. 18: Schematic plots demonstrating the induced improper ferroelectricity in 1PbTiO3/1SrTiO3 superlattice.

From: Interface enhanced functionalities in oxide superlattices under mechanical and electric boundary conditions

Fig. 18

a Electric polarization along [001] direction is generated by zone center Γ3− mode. b Out-of-phase oxygen octahedral rotation is generated by zone boundary M4− mode. c In-phase oxygen octahedral rotation is generated by zone boundary M2+ mode. d The calculated ground state total energies as a function of electric polarization by including Γ3− mode only, and Γ3− mode together with M4− and M2+ all together. Figure 18a are reprinted with permission from ref. 25, Copyright [2005] {American Physical Society}. Figure 18b–d are reprinted with permission from ref. 162. Copyright (2008) Springer Nature.

Back to article page