Fig. 17: Polarization, tetragonality and ferroelectric phase transition temperature of PbTiO3/SrTiO3 superlattices. | npj Computational Materials

Fig. 17: Polarization, tetragonality and ferroelectric phase transition temperature of PbTiO3/SrTiO3 superlattices.

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

Fig. 17

a Electric polarizations predicted by Landau–Devonshire phenomenological model and first-principles calculations as a function of the ratio between PbTiO3 fraction and the SrTiO3 fraction (np/ns) in the superlattices. b The measured and predicted electric polarizations as a function of PbTiO3 volume fraction in the superlattices based on positive up negative down experiment and Landau–Devonshire phenomenological theory, respectively. c Tetragonalities of two series of samples grown on 460 °C and 510 °C as a function of PbTiO3 volume fraction in the superlattices. d Experimental (dots) and theoretical (solid lines) ferroelectric structural transition temperatures as a function of PbTiO3 volume fraction in the superlattices. Reprinted with permission from ref. 190. Copyright (2008) John Wiley & Sons, Inc.

Back to article page