Domain kinetics during polarization reversal in 36° Y-cut congruent lithium niobate

Scanning Probe Microscopy 2018

Neradovskaia, E.A.^1,2 ; Neradovskiy, M.M.^1,2 ; Esin, A.A.^2,3 ; Chuvakova, M.A.^2 ; Baldil, P.^1 ; De Micheli, M.P.^1 ; Akhmatkhanov, A.R.^2,3 ; Forget, N.^4 ; Shur, V. Ya.^2,3

Institut de Physique de Nice, Nice

06108, France^1

School of Natural Sciences and Mathematics, Ural Federal University, Ekaterinburg

620000, Russia^2

Labfer Ltd., Ekaterinburg

620014, Russia^3

Fastlite Ltd., Antibes

06600, France^4

关键词: Congruent lithium niobate;    Electrical field;    External electric field;    Linear dependence;    Liquid electrodes;    Polarization reversals;    Switching process;    Threshold fields;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/443/1/012024/pdf
DOI  :  10.1088/1757-899X/443/1/012024

来源: IOP

【 摘 要 】

We present experimental study of domain kinetics in 36? Y-cut congruent lithium niobate during polarization reversal by increasing external electric field using liquid electrodes. The motion of the domain walls has been imaged on the Zs+ and Zs-polar surfaces of the crystal simultaneously. The linear dependence of the threshold field on the field rate has been revealed. The threshold field in low field rate limit has been estimated as 32.8 ? 0.3 kV/mm, which is lower than predicted value. The switching process for polarization reversal in the constant field has dramatically accelerated with increase of external electrical field above threshold. The new approach, which accelerates significantly the in situ study of 3D domain kinetics in CLN crystals, has been demonstrated.