Title
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Direct observation of ferroelectric domain walls in : wall-meanders, kinks, and local electric charges
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Author
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Abstract
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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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Language
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English
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Source (journal)
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Advanced functional materials. - Weinheim
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Publication
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Weinheim
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2016
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ISSN
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1616-301X
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DOI
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10.1002/ADFM.201603489
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Volume/pages
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26
:42
(2016)
, p. 7599-7604
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ISI
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000388166700006
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Full text (Publisher's DOI)
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Full text (publisher's version - intranet only)
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