Fig. 19: Illustration of the hybrid improper ferroelectricity in artificial perovskite superlattices. | npj Computational Materials

Fig. 19: Illustration of the hybrid improper ferroelectricity in artificial perovskite superlattices.

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

Fig. 19

a Oxygen octahedral rotation around [001] direction. b Oxygen octahedral tilt around [110] direction. c Antipolar displacement (X5+ mode) on A-site atoms. d Residual polarization arises from the non-canceled antipolar A-site displacements in 1LaGaO3/1YGaO3 superlattice. Reprinted from ref. 200, Copyright (2012), with permission from Elsevier.

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