Synthesis of Zinc-Doped Lithium Tantalate Charge in the Technology of Novel Crystalline Functional Materials

A procedure was developed for preparing lithium tantalate (LiTaO 3 ) 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 analys...

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Bibliographic Details
Published in:Russian journal of applied chemistry 2020-05, Vol.93 (5), p.645-653
Main Authors: Palatnikov, M. N., Masloboeva, S. M., Arutyunyan, L. G.
Format: Article
Language:English
Subjects:
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Coercivity
Functional materials
Heat treatment
Industrial Chemistry/Chemical Engineering
Infrared analysis
Infrared spectroscopy
Inorganic Synthesis and Industrial Inorganic Chemistry
Lithium
Lithium niobates
Lithium tantalates
Optical properties
Piezoelectric ceramics
Piezoelectricity
Synthesis
Tantalum
Thermal analysis
Zinc
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Summary:A procedure was developed for preparing lithium tantalate (LiTaO 3 ) 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 LiTaO 3 :Zn charge were determined. Comparison with the properties of an isomorphic compound LiNbO 3 (LiNbO 3 :Zn) demonstrated the advantages of the synthesis procedure developed and practically important properties such as high optical stability of LiTaO 3 :Zn crystals and low coercive field, acquired by lithium tantalate upon doping with zinc. Samples of LiTaO 3 :Zn charge of various compositions, suitable both for the technology of LiTaO 3 :Zn crystals and for the preparation of piezoelectric ceramics based on zinc-doped lithium tantalate, were prepared by the developed procedure.
ISSN:1070-4272
1608-3296
DOI:10.1134/S1070427220050043