Open AccessFormation of the domain structure in CLN under the pyroelectric field induced by pulse infrared laser heating
Author(s) -
V. Ya. Shur,
М. С. Кособоков,
E. A. Mingaliev,
V. R. Karpov
Publication year - 2015
Publication title -
aip advances
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.421
H-Index - 58
ISSN - 2158-3226
DOI - 10.1063/1.4933079
Subject(s) - pyroelectricity , lithium niobate , laser , infrared , materials science , field (mathematics) , domain (mathematical analysis) , irradiation , pulse (music) , far infrared laser , time domain , optics , optoelectronics , ferroelectricity , physics , dielectric , nuclear physics , computer vision , mathematical analysis , mathematics , detector , computer science , pure mathematics
The evolution of the self-assembled quasi-regular micro- and nanodomain structures after pulse infrared laser irradiation in congruent lithium niobate crystal was studied by in situ optical observation. Several scenarios of domain kinetics represented covering of the irradiated zone by nets of the separated domain chains and rays have been revealed. The time dependence of the total domain length was analyzed in terms of modified Kolmogorov-Avrami theory. The domain structure evolution was attributed to the action of pyroelectric field appeared during cooling. The time dependence of the spatial distribution of the pyroelectric field during pulse laser heating and subsequent cooling was calculated by finite element method. The results of computer simulation allowed us to explain the experimental results and can be used for creation of tailored domain structures thus opening the new abilities of the submicron-scale domain engineering in ferroelectrics
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