Study of the field-induced evolution of the domain geometry in lithium niobate and lithium tantalate single crystals by in-situ optical method

Nebogatnikov, M., Baturin, I., Rodina, E., Ezhov, A., Lobov, A., Dolbilov, M., Shur, V. and Gallo, K. (2005) Study of the field-induced evolution of the domain geometry in lithium niobate and lithium tantalate single crystals by in-situ optical method. International Symposium "Micro- and Nano-scale Domain Structuring in Ferroelectrics" (ISDS’05), Ekaterinburg, Russia. 15 - 19 Nov 2005.

Abstract

Evolution of the domain structure geometry including quantitative statistic information about domain walls' orientation has been in-situ studied by optical microscopy and light diffraction with subsequent image analysis in congruent, stoichiometric and MgO doped lithium niobate (LN) and lithium tantalate (LT) single crystals. 2D lithographic pattern with about 20 µm period in CLN was used to study the simplified case of domain kinetics. The appearance of the switching stage with domain walls oriented in both X and Y directions, was shown experimentally. Such behavior was predicted by computer simulation of the domain growth through merging of the neighboring domains.

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