Abstract
A process has been developed for preparing boron-doped niobium pentoxides Nb2O5〈B〉 to be used as precursors in the sysnthesis of nithium biobate batches LiNbO3〈B〉 having tailored dopant concentrations. Solutions of various origins were used to isolate Nb2O5〈B〉. A method has been advanced to account for boron loss as volatile compounds upon the heat treatment of niobium hydroxide in order to determine the boron amount to be added to niobium hydroxide in the form of H3BO3. The boron concentration in LiNbO3〈B〉 during lithium niobate synthesis is shown to be independent of the origin of the Nb2O5〈B〉 precursor with the same as-batch boron concentration. The phase compositions of Nb2O5〈B〉 and LiNbO3〈B〉 have been characterized by X-ray powder diffraction and IR spectroscopy and boron concentrations have been determined for the synthesis of single-phase lithium niobate batches for use in the production of optically uniform single crystals and pore-free piezoelectric ceramics.
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Original Russian Text © S.M. Masloboeva, G.I. Kadyrova, L.G. Arutyunyan, 2016, published in Zhurnal Neorganicheskoi Khimii, 2016, Vol. 61, No. 4, pp. 433–440.
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Masloboeva, S.M., Kadyrova, G.I. & Arutyunyan, L.G. Synthesis of Nb2O5〈B〉 solid precursors and LiNbO3〈B〉 batches and their phase compositions. Russ. J. Inorg. Chem. 61, 412–419 (2016). https://doi.org/10.1134/S0036023616040148
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DOI: https://doi.org/10.1134/S0036023616040148