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Néel-like domain walls in ferroelectric Pb(Zr,Ti)O3 single crystals

Author

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  • Xian-Kui Wei

    (Ceramics Laboratory, EPFL-Swiss Federal Institute of Technology
    Peter Grünberg Institute and Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons, Forschungszentrum Jülich GmbH)

  • Chun-Lin Jia

    (Peter Grünberg Institute and Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons, Forschungszentrum Jülich GmbH
    The School of Electronic and Information Engineering, Xi'an Jiaotong University)

  • Tomas Sluka

    (Ceramics Laboratory, EPFL-Swiss Federal Institute of Technology)

  • Bi-Xia Wang

    (Simon Fraser University, 8888 University Drive, Burnaby, British Columbia, Canada V5A 1S6)

  • Zuo-Guang Ye

    (Simon Fraser University, 8888 University Drive, Burnaby, British Columbia, Canada V5A 1S6
    Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education and International Center for Dielectric Research, Xi’an Jiaotong University)

  • Nava Setter

    (Ceramics Laboratory, EPFL-Swiss Federal Institute of Technology)

Abstract

In contrast to the flexible rotation of magnetization direction in ferromagnets, the spontaneous polarization in ferroelectric materials is highly confined along the symmetry-allowed directions. Accordingly, chirality at ferroelectric domain walls was treated only at the theoretical level and its real appearance is still a mystery. Here we report a Néel-like domain wall imaged by atom-resolved transmission electron microscopy in Ti-rich ferroelectric Pb(Zr1−xTix)O3 crystals, where nanometre-scale monoclinic order coexists with the tetragonal order. The formation of such domain walls is interpreted in the light of polarization discontinuity and clamping effects at phase boundaries between the nesting domains. Phase-field simulation confirms that the coexistence of both phases as encountered near the morphotropic phase boundary promotes the polarization to rotate in a continuous manner. Our results provide a further insight into the complex domain configuration in ferroelectrics, and establish a foundation towards exploring chiral domain walls in ferroelectrics.

Suggested Citation

  • Xian-Kui Wei & Chun-Lin Jia & Tomas Sluka & Bi-Xia Wang & Zuo-Guang Ye & Nava Setter, 2016. "Néel-like domain walls in ferroelectric Pb(Zr,Ti)O3 single crystals," Nature Communications, Nature, vol. 7(1), pages 1-7, November.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms12385
    DOI: 10.1038/ncomms12385
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