Abnormal Domain Growth during Polarization Reversal in Lithium Niobate Crystal Modified by Proton Exchange
Электронный научный архив УРФУ
Информация об архиве | Просмотр оригинала| Поле | Значение | |
| Заглавие |
Abnormal Domain Growth during Polarization Reversal in Lithium Niobate Crystal Modified by Proton Exchange
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| Автор |
Savelyev, E.
Akhmatkhanov, A. Kosobokov, M. Tronche, H. Doutre, F. Lunghi, T. Baldi, P. Shur, V. |
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| Тематика |
COMPOSITION GRADIENT
DOMAIN ENGINEERING DOMAIN SWITCHING LITHIUM NIOBATE OPTICAL WAVEGUIDES PROTON EXCHANGE |
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| Описание |
The results of an experimental study of the abnormal domain structure kinetics in lithium niobate single crystals with a surface layer modified by soft proton exchange are presented. Domain switching in a wide field range allowed two qualitatively different types of domain structure evolution to be revealed: (1) the traditional growth of hexagonal domains in fields higher than 21.5 kV/mm and (2) the abnormal growth of stripe domains oriented along the Y crystallographic directions in the field range from 3.8 to 21.5 kV/mm. The stripe domains had a width up to 4 µm and depth up to 30 µm. It was shown that the time dependence of the total length of stripe domains could be analyzed in terms of the modified Kolmogorov–Avrami approach, taking into account the transition from the one-dimensional β-model to the one-dimensional α-model. The possibility of the controllable creation of a quasi-periodic structure of stripe domains with an average period of 5 µm by a two-stage polarization switching process was demonstrated. The formation and growth of stripe domains were considered in terms of the kinetic approach to the evolution of the domain structure as a result of the domain walls’ motion under inefficient screening conditions caused by the presence of a modified surface layer. The abnormally low threshold fields were attributed to a presence of a “built-in” field facilitating switching, created by a composition gradient induced by soft proton exchange. © 2023 by the authors.
Ministry of Education and Science of the Russian Federation, Minobrnauka: 075-15-2021-677; Ural Federal University, UrFU The study was financially supported by the Ministry of Science and Higher Education of the Russian Federation within the Development Program of the Ural Federal University named after the first President of Russia B.N. Yeltsin in accordance with the program of strategic academic leadership “Priority-2030”. The work was performed using the equipment of the Ural Federal University “Modern Nanotechnologies” (reg. No. 2968), supported by the Ministry of Science and Higher Education of the Russian Federation (Project 075-15-2021-677). |
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| Дата |
2024-04-05T16:36:42Z
2024-04-05T16:36:42Z 2023 |
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| Тип |
Article
Journal article (info:eu-repo/semantics/article) |info:eu-repo/semantics/publishedVersion |
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| Идентификатор |
Savelyev, E, Akhmatkhanov, A, Kosobokov, M, Tronche, H, Doutre, F, Lunghi, T, Baldi, P & Shur, V 2023, 'Abnormal Domain Growth during Polarization Reversal in Lithium Niobate Crystal Modified by Proton Exchange', Crystals, Том. 13, № 1, 72. https://doi.org/10.3390/cryst13010072
Savelyev, E., Akhmatkhanov, A., Kosobokov, M., Tronche, H., Doutre, F., Lunghi, T., Baldi, P., & Shur, V. (2023). Abnormal Domain Growth during Polarization Reversal in Lithium Niobate Crystal Modified by Proton Exchange. Crystals, 13(1), [72]. https://doi.org/10.3390/cryst13010072 2073-4352 Final All Open Access, Gold https://www.scopus.com/inward/record.uri?eid=2-s2.0-85146759636&doi=10.3390%2fcryst13010072&partnerID=40&md5=28da1b54a3052116baaddbf250153c40 https://www.mdpi.com/2073-4352/13/1/72/pdf?version=1672569364 http://elar.urfu.ru/handle/10995/130981 10.3390/cryst13010072 85146759636 000916847300001 |
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| Язык |
en
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| Права |
Open access (info:eu-repo/semantics/openAccess)
cc-by https://creativecommons.org/licenses/by/4.0/ |
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| Формат |
application/pdf
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| Издатель |
MDPI
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| Источник |
Crystals
Crystals |
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