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Title: Domain wall orientation and domain shape in KTiOPO4 crystals
Author: Shur, V. Ya.
Vaskina, E. M.
Pelegova, E. V.
Chuvakova, M. A.
Akhmatkhanov, A. R.
Kizko, O. V.
Ivanov, M.
Kholkin, A. L.
Issue Date: 2016
Publisher: AIP Publishing
Abstract: Domain shape evolution and domain wall motion have been studied in KTiOPO4 (KTP) ferroelectric single crystals using complementary experimental methods. The in situ visualization of domain kinetics has allowed revealing: (1) qualitative change of the domain shape, (2) dependence of the domain wall velocity on its orientation, (3) jump-like domain wall motion caused by domain merging, (4) effect of domain shape stability. The model of domain wall motion driven by generation of elementary steps (kink-pair nucleation) and subsequent kink motion is presented. The decrease in the relative velocity of the approaching parallel domain walls is attributed to electrostatic interaction. The effect of polarization reversal induced by chemical etching is observed. The obtained results are important for the development of domain engineering in the crystals of KTP family.
Peer review: yes
DOI: 10.1063/1.4963781
ISSN: 0003-6951
Appears in Collections:CICECO - Artigos

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