Abstract
A procedure was developed for preparing lithium tantalate (LiTaO3) charge homogeneously doped with lithium from high-purity tantalum-containing solutions, based on heat treatment of lithium-, tantalum-, and zinc-containing citrate precursors. The thermolysis products were studied by thermal analysis, X-ray diffraction, and IR absorption spectroscopy. The optimum synthesis conditions and zinc concentration to obtain a single-phase LiTaO3:Zn charge were determined. Comparison with the properties of an isomorphic compound LiNbO3 (LiNbO3:Zn) demonstrated the advantages of the synthesis procedure developed and practically important properties such as high optical stability of LiTaO3:Zn crystals and low coercive field, acquired by lithium tantalate upon doping with zinc. Samples of LiTaO3:Zn charge of various compositions, suitable both for the technology of LiTaO3:Zn crystals and for the preparation of piezoelectric ceramics based on zinc-doped lithium tantalate, were prepared by the developed procedure.
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Palatnikov, M.N., Masloboeva, S.M. & Arutyunyan, L.G. Synthesis of Zinc-Doped Lithium Tantalate Charge in the Technology of Novel Crystalline Functional Materials. Russ J Appl Chem 93, 645–653 (2020). https://doi.org/10.1134/S1070427220050043
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DOI: https://doi.org/10.1134/S1070427220050043