Publication
Title
Direct observation of ferroelectric domain walls in $LiNbO_{3}$ : wall-meanders, kinks, and local electric charges
Author
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.
Language
English
Source (journal)
Publication
Weinheim : 2016
ISSN
1616-301X
Volume/pages
26:42(2016), p. 7599-7604
ISI
000388166700006
Full text (Publishers DOI)
Full text (publishers version - intranet only)
UAntwerpen
 Faculty/Department Research group Publication type Subject Affiliation Publications with a UAntwerp address