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This article is cited in 8 scientific papers (total in 8 papers)
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Structural features, physicochemical, and optical characteristics of lithium niobate crystals grown from boron-doped melts
N. V. Sidorov, N. A. Teplyakova, R. A. Titov, M. N. Palatnikov Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials
Kola Science Centre of the Russian Academy of Sciences
Abstract:
Chemical interactions in the Li$_{2}$O–B$_{2}$O$_{3}$–Nb$_{2}$O$_{5}$ system, as well as certain features of crystallization of LiNbO$_3$ crystals growing from melts containing nonmetal impurities, are considered. It is shown that boron changes the structure of the melt and has a significant impact on the structure and physical characteristics of LiNbO$_3$ : В crystals, practically not entering the lithium niobate structure. Notable changes and certain features were found in the Raman spectra of grown LiNbO$_3$ : В crystals, which indicates changing the sequence of the main cations and vacancies along a crystal polar axis and distortion of the oxygen octahedrons. Meanwhile, the distortion of the oxygen octahedrons is anisotropic. LiNbO$_3$ : В crystals have a higher structural homogeneity than congruent crystals, and are close in the number of NbLi defects to a crystal with a stoichiometric composition, differing from it by a substantially less photorefraction effect.
Received: 25.01.2018
Citation:
N. V. Sidorov, N. A. Teplyakova, R. A. Titov, M. N. Palatnikov, “Structural features, physicochemical, and optical characteristics of lithium niobate crystals grown from boron-doped melts”, Zhurnal Tekhnicheskoi Fiziki, 88:12 (2018), 1820–1828; Tech. Phys., 63:12 (2018), 1762–1770
Linking options:
https://www.mathnet.ru/eng/jtf5743 https://www.mathnet.ru/eng/jtf/v88/i12/p1820
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