DataVXAdvanced Functional MaterialsPaper
journal article·2016-11

Direct Observation of Ferroelectric Domain Walls in LiNbO3: Wall‐Meanders, Kinks, and Local Electric Charges

Julie Gonnissen, Dmitry Batuk, Guillaume F. Nataf, Lewys Jones, Artem M. Abakumov, Sandra Van Aert, Dominique Schryvers, Ekhard K. H. Salje

Advanced Functional Materials· Volume 26· Issue 42
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Source abstract

Abstract

Direct observations of the ferroelectric domain boundaries in LiNbO3 are performed using high‐resolution high‐angle annular dark field scanning transmission electron microscopy imaging, revealing a very narrow width of the domain wall between the 180° domains. The domain walls demonstrate local side‐way meandering, which results in inclinations even when the overall wall orientation follows the ferroelectric polarization. These local meanders contain kinks with “head‐to‐head” and “tail‐to‐tail” dipolar configurations and are therefore locally charged. The charged meanders are confined to a few cation layers along the polarization direction and are separated by longer stretches of straight domain walls.
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Research context

Electronic materials

OpenAlex topics: Ferroelectric and Piezoelectric Materials · Photorefractive and Nonlinear Optics · Multiferroics and related materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Electron Microscopy for Materials Science (EMAT) University of Antwerp Groenenborgerlaan 171 2020 Antwerp Belgium

Materials Research and Technology Department Luxembourg Institute of Science and Technology 41 rue du Brill L‐4422 Belvaux Luxembourg

SPEC, CEA, CNRS Université Paris‐Saclay CEA Saclay 91191 Gif‐sur‐Yvette France

Department of Materials University of Oxford Parks Road Oxford OX1 3PH UK

Center for Electrochemical Energy Storage Skolkovo Institute of Science and Technology Nobelya str. 3 143026 Moscow Russia

Department of Earth Sciences University of Cambridge Downing Street Cambridge CB1 3EQ UK

Funding

Fonds Wetenschappelijk Onderzoek

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