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Finite element method simulation of the domain growth kinetics in single-crystal LiTaO3: Role of surface conductivity

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3 Author(s)
Brugere,, Antoine ; CEA LETI MINATEC, 17 rue des martyrs, Grenoble Cédex 38054, France ; Gidon, S. ; Gautier, B.

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Domain growth under the electric field of an atomic force microscope (AFM) is studied by piezoresponse force microscopy in congruent single-crystal LiTaO3 and compared to a finite element method simulation. The model is based on the existence of a conductive top layer, being the water absorbed layer always present in AFM experiments in air, within which the electric potential can propagate beyond the tip contact area. As a result, the simulated domain growth demonstrates kinetics in agreement with experimental observations, thus underlying the active role of the water layer.

Published in:

Journal of Applied Physics  (Volume:110 ,  Issue: 5 )