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SYNTHESIS, STRUCTURE, LUMINESCENT AND MECHANICAL PROPERTIES OF YNbхTa1–хO4 SOLID SOLUTIONS

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Abstract

A series of mixed yttrium tantalo-niobates (YNbхTa1–хO4, x = 0-1) is obtained by the sol-gel synthesis. It is shown that the temperature of this synthesis of YNbхTa1–хO4 and its duration are much lower than those in the solid-phase synthesis. The properties of both synthesized powders and ceramic solid solutions (SSs) YNbхTa1–хO4, x = 0-1, prepared based on them, are investigated. It is found that under UV excitation at any Nb:Ta ratio in YNbхTa1–хO4 SSs the luminescent signal is enhanced as compared to that in individual YNbO4 and YTaO4 compounds, which is caused by energy transfer between the Nb4+–O– and Ta4+–O– luminescence centers. Morphological features of the microstructure of ceramic YNbхTa1–хO4 SSs are studied. Mechanical characteristics of ceramic YNbхTa1–хO4 SSs, such as Young’s modulus and the stress intensity factor for mode 1 KIC, which is a criterion of the material crack resistance, are estimated.

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Funding

The work was supported by scientific theme No. 0226-IC-2020-0004 (registration No. АААА-А18-118022190125-2) of the Ministry of Science and Higher Education of the Russian Federation.

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Authors and Affiliations

  1. Tananaev Institute of Chemistry - Subdivision of the Federal Research Center “Kola Science Center of the Russian Academy of Sciences”, Kola Science Center, Russian Academy of Sciences, Apatity, Russia

    O. B. Shcherbina, S. M. Masloboeva, M. N. Palatnikov & V. V. Efremov

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  1. O. B. Shcherbina
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  2. S. M. Masloboeva
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  3. M. N. Palatnikov
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  4. V. V. Efremov
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Correspondence to O. B. Shcherbina.

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Russian Text © The Author(s), 2021, published in Zhurnal Strukturnoi Khimii, 2021, Vol. 62, No. 11, pp. 1827-1834.https://doi.org/10.26902/JSC_id82651

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Shcherbina, O.B., Masloboeva, S.M., Palatnikov, M.N. et al. SYNTHESIS, STRUCTURE, LUMINESCENT AND MECHANICAL PROPERTIES OF YNbхTa1–хO4 SOLID SOLUTIONS. J Struct Chem 62, 1715–1722 (2021). https://doi.org/10.1134/S002247662111007X

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  • DOI: https://doi.org/10.1134/S002247662111007X

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