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Microstructure and elastic modulus of ceramic Li x Na1 − x NbO3 perovskite solid solutions prepared at 6 GPa

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Abstract

The microstructure of ceramic samples of high-pressure ferroelectric Li x Na1 − x NbO3 (x = 0.17, 0.25) perovskite solid solutions has been studied in relation to synthesis temperature and composition. The elastic properties (Young’s modulus) of the high-pressure Li x Na1 − x NbO3 (x = 0.125, 0.17, 0.25) solid solutions have been studied for the first time by a contact technique. The results demonstrate that, with increasing sintering temperature, the Young’s modulus of the high-pressure Li x Na1 − x NbO3 solid solutions at singular concentration points (x i = 0.125 and 0.25, Li/Na = 1/7 and 1/3) increases considerably, whereas that of Li0.17Na0.83NbO3 decreases markedly, which seems to be related to the recrystallization behavior of ordered and disordered solid solutions at high pressures.

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Authors and Affiliations

  1. Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials, Kola Scientific Center, Russian Academy of Sciences, Akademgorodok 26a, Apatity, Murmansk oblast, 184209, Russia

    M. N. Palatnikov, O. B. Shcherbina, V. V. Efremov & N. V. Sidorov

  2. Department of Ceramics and Glass Engineering/CICECO, University of Aveiro, 3810-193, Aveiro, Portugal

    A. N. Salak

Authors
  1. M. N. Palatnikov
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  2. O. B. Shcherbina
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  3. V. V. Efremov
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  4. N. V. Sidorov
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  5. A. N. Salak
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Correspondence to M. N. Palatnikov.

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Original Russian Text © M.N. Palatnikov, O.B. Shcherbina, V.V. Efremov, N.V. Sidorov, A.N. Salak, 2010, published in Neorganicheskie Materialy, 2010, Vol. 46, No. 12, pp. 1483–1487.

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Palatnikov, M.N., Shcherbina, O.B., Efremov, V.V. et al. Microstructure and elastic modulus of ceramic Li x Na1 − x NbO3 perovskite solid solutions prepared at 6 GPa. Inorg Mater 46, 1348–1352 (2010). https://doi.org/10.1134/S0020168510120149

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  • DOI: https://doi.org/10.1134/S0020168510120149

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