Synchrotron x-ray scattering evidence for interlayer structural coupling in (PbMg1/3Nb2/3O3)(1−x)/(PbTiO3)x superlattices

Creators: Lemee, Nathalie; Dooryhee, Eric; Bouyanfif, Houssny; Le Marrec, Françoise; Nemoz, Maud; Hodeau, Jean-Louis; Karkut, Michael G.

Others:: Laboratoire de Physique de la Matière Condensée - UR UPJV 2081 (LPMC) ; Université de Picardie Jules Verne (UPJV); Matériaux, Rayonnements, Structure (MRS) ; Institut Néel (NEEL) ; Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS); Centre de recherche sur l'hétéroepitaxie et ses applications (CRHEA) ; Université Nice Sophia Antipolis (1965 - 2019) (UNS) ; COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS)-Université Côte d'Azur (UCA)

Description

We present evidence for in-plane coupling in relaxor PbMg1/3Nb2/3O3 / ferroelectric PbTiO3 superlattices [PMN(1−x)Lambda/PTxLambda]10. For constant superlattice wavelength Lambda=dPMN+dPT, we find that by varying the constituents thicknesses dPMN and dPT a significant effect is observed on the internal a1/a2 domain structure of the PT layers as well as on the appearance of domains in PMN. Since the strain effects on the structural patterns can be modulated by adjusting x, this is one way to control the polarization axis on a nanoscale level.

Synchrotron x-ray scattering evidence for interlayer structural coupling in (PbMg1/3Nb2/3O3)(1−x)/(PbTiO3)x superlattices

Description

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