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- Title
Structural Features, Physicochemical, and Optical Characteristics of Lithium Niobate Crystals Grown from Boron-Doped Melts.
- Authors
Sidorov, N. V.; Teplyakova, N. A.; Titov, R. A.; Palatnikov, M. N.
- Abstract
Abstract: Chemical interactions in the Li2O−B2O3−Nb2O5 system, as well as certain features of crystallization of LiNbO3 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 LiNbO3 : В crystals, practically not entering the lithium niobate structure. Notable changes and certain features were found in the Raman spectra of grown LiNbO3 : 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. LiNbO3 : 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.
- Subjects
OPTICAL properties of lithium niobate; CRYSTAL growth; BORON; MELTING; CRYSTAL structure; STOICHIOMETRY
- Publication
Technical Physics, 2018, Vol 63, Issue 12, p1762
- ISSN
1063-7842
- Publication type
Article
- DOI
10.1134/S1063784218120198