Domain wall orientation and domain shape in KTiOPO4 crystals
authors Shur, VY; Vaskina, EM; Pelegova, EV; Chuvakova, MA; Akhmatkhanov, AR; Kizko, OV; Ivanov, M; Kholkin, AL
nationality International
journal APPLIED PHYSICS LETTERS
keywords PERIODICALLY-POLED KTIOPO4; MATCHED 2ND-HARMONIC GENERATION; OPTICAL PARAMETRIC OSCILLATOR; SITU VIDEO OBSERVATION; FLUX-GROWN KTIOPO4; FERROELECTRIC DOMAINS; WAVE-GUIDE; BLUE-LIGHT; LINBO3; FIELD
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. Published by AIP Publishing.
publisher AMER INST PHYSICS
issn Mar-51
year published 2016
volume 109
issue 13
digital object identifier (doi) 10.1063/1.4963781
web of science category Physics, Applied
subject category Physics
unique article identifier WOS:000384747900036
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