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Non-Ising and chiral ferroelectric domain walls revealed by nonlinear optical microscopy

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  • Salia Cherifi-Hertel

    (Université de Strasbourg, CNRS, Institut de Physique et Chimie des Matériaux de Strasbourg, UMR 7504)

  • Hervé Bulou

    (Université de Strasbourg, CNRS, Institut de Physique et Chimie des Matériaux de Strasbourg, UMR 7504)

  • Riccardo Hertel

    (Université de Strasbourg, CNRS, Institut de Physique et Chimie des Matériaux de Strasbourg, UMR 7504)

  • Grégory Taupier

    (Université de Strasbourg, CNRS, Institut de Physique et Chimie des Matériaux de Strasbourg, UMR 7504)

  • Kokou Dodzi (Honorat) Dorkenoo

    (Université de Strasbourg, CNRS, Institut de Physique et Chimie des Matériaux de Strasbourg, UMR 7504)

  • Christian Andreas

    (Université de Strasbourg, CNRS, Institut de Physique et Chimie des Matériaux de Strasbourg, UMR 7504)

  • Jill Guyonnet

    (DQMP, University of Geneva)

  • Iaroslav Gaponenko

    (DQMP, University of Geneva)

  • Katia Gallo

    (KTH—Royal Institute of Technology)

  • Patrycja Paruch

    (DQMP, University of Geneva)

Abstract

The properties of ferroelectric domain walls can significantly differ from those of their parent material. Elucidating their internal structure is essential for the design of advanced devices exploiting nanoscale ferroicity and such localized functional properties. Here, we probe the internal structure of 180° ferroelectric domain walls in lead zirconate titanate (PZT) thin films and lithium tantalate bulk crystals by means of second-harmonic generation microscopy. In both systems, we detect a pronounced second-harmonic signal at the walls. Local polarimetry analysis of this signal combined with numerical modelling reveals the existence of a planar polarization within the walls, with Néel and Bloch-like configurations in PZT and lithium tantalate, respectively. Moreover, we find domain wall chirality reversal at line defects crossing lithium tantalate crystals. Our results demonstrate a clear deviation from the ideal Ising configuration that is traditionally expected in uniaxial ferroelectrics, corroborating recent theoretical predictions of a more complex, often chiral structure.

Suggested Citation

  • Salia Cherifi-Hertel & Hervé Bulou & Riccardo Hertel & Grégory Taupier & Kokou Dodzi (Honorat) Dorkenoo & Christian Andreas & Jill Guyonnet & Iaroslav Gaponenko & Katia Gallo & Patrycja Paruch, 2017. "Non-Ising and chiral ferroelectric domain walls revealed by nonlinear optical microscopy," Nature Communications, Nature, vol. 8(1), pages 1-9, August.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_ncomms15768
    DOI: 10.1038/ncomms15768
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    Cited by:

    1. Sixu Wang & Wei Li & Chenguang Deng & Zijian Hong & Han-Bin Gao & Xiaolong Li & Yueliang Gu & Qiang Zheng & Yongjun Wu & Paul G. Evans & Jing-Feng Li & Ce-Wen Nan & Qian Li, 2024. "Giant electric field-induced second harmonic generation in polar skyrmions," Nature Communications, Nature, vol. 15(1), pages 1-10, December.
    2. Sandhya Susarla & Shanglin Hsu & Fernando Gómez-Ortiz & Pablo García-Fernández & Benjamin H. Savitzky & Sujit Das & Piush Behera & Javier Junquera & Peter Ercius & Ramamoorthy Ramesh & Colin Ophus, 2023. "The emergence of three-dimensional chiral domain walls in polar vortices," Nature Communications, Nature, vol. 14(1), pages 1-7, December.
    3. Jidan Yang & Yu Zou & Wentao Tang & Jinxing Li & Mingjun Huang & Satoshi Aya, 2022. "Spontaneous electric-polarization topology in confined ferroelectric nematics," Nature Communications, Nature, vol. 13(1), pages 1-12, December.

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