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Phase composition, microstructure, and properties of Na1 − y NbO3 − y/2 ceramics

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We have studied the phase composition, microstructure, and dielectric and thermophysical properties of Na1 − y NbO3 − y/2 (0 ≤ y ≤ 0.20) ceramics and identified a complicated sequence of phase transformations within the homogeneity range of sodium niobate (y ≤ 0.10), accompanied by anomalous variations in its physical properties. At low y values, discontinuous secondary recrystallization occurs. We conclude that dielectric effects above the Curie temperature are related to the electrical conductivity of the material and that those at low temperatures are governed by the motion of domain walls and interfaces. The temperature-dependent structural, dielectric, and thermophysical properties of the materials studied are shown to correlate.

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References

  1. Tret’yakov, Yu.D., Khimiya nestekhiometricheskikh okislov (Chemistry of Nonstoichiometric Oxides), Moscow: Mosk. Gos. Univ., 1974.

    Google Scholar 

  2. Prisedskii, V.V., Komarov, V.P., and Pan’ko, G.F., Extended Defects and Nonstoichiometry in Perovskite Oxides, Dokl. Akad. Nauk SSSR, 1979, vol. 247, no. 3, pp. 620–624.

    CAS  Google Scholar 

  3. Petrenko, A.G. and Prisedskii, V.V., Defekty struktury v segnetoelektrikakh (Structural Defects in Ferroelectrics), Kiev: Uchebno-Metodicheskii Kabinet po Vysshemu Obrazovaniyu pri Minvuze Ukr. SSR, 1989.

    Google Scholar 

  4. Shapiro, Z.I., Trunov, V.K., and Shishov, V.V., Preparation and Physicochemical Properties of Lithium and Sodium Metaniobates, Obz. Inf., Ser.: Reaktivy Osobo Chistye Veshchestva, 1978.

  5. Reznitchenko, L.A., Turik, A.V., Kuznetsova, E.M., and Sakhnenko, V.P., Piezoelectricity in NaNbO3 Ceramics, J. Phys.: Condens. Matter, 2001, vol. 13, pp. 3875–3881.

    Article  CAS  Google Scholar 

  6. Reznichenko, L.A., Shilkina, L.A., Razumovskaya, O.N., et al., Properties of Nonstoichiometric Sodium Niobate, Zh. Tekh. Fiz., 2002, vol. 72, no. 3, pp. 43–47.

    Google Scholar 

  7. Magomedov, Ya.B. and Gadzhiev, G.G., Apparatus for High-Temperature Measurements of the Thermal Conductivity of Solids and Melts, Teplofiz. Vys. Temp., 1990, vol. 28, no. 1, pp. 185–186.

    CAS  Google Scholar 

  8. Kallaev, S.N., Gadzhiev, G.G., Kamilov, I.K., et al., Anomalous Thermal Conductivity and Thermal Expansion of Ferroelectric PZT-Based Ceramics, Izv. Akad. Nauk, Ser. Fiz., 2004, vol. 68, no. 7, pp. 979–981.

    CAS  Google Scholar 

  9. Reznichenko, L.A., Shilkina, L.A., Razumovskaya, O.N., et al., Dielectric and Piezoelectric Properties of NaNbO3-Based Solid Solutions, Neorg. Mater., 2003, vol. 39, no. 2, pp. 187–199 [Inorg. Mater. (Engl. Transl.), vol. 39, no. 2, pp. 139–150].

    Article  Google Scholar 

  10. Reznichenko, L.A., Shilkina, L.A., Gagarina, E.S., et al., Crystallographic Shear in Niobium Oxides of Different Compositions, Kristallografiya, 2004, vol. 49, no. 5, pp. 909–916.

    Google Scholar 

  11. Reznichenko, L.A., Shilkina, L.A., Titov, S.V., et al., Defect Structure of Alkaline-Earth, Cadmium, and Lead Titanates, Neorg. Mater., 2005, vol. 41, no. 5, pp. 573–584 [Inorg. Mater. ((Engl. Transl.), vol. 41, no. 45, pp. 492–502].

    Article  Google Scholar 

  12. Reznichenko, L.A., Shilkina, L.A., Gagarina, E.S., et al., Structural Instabilities, Incommensurate Modulations, and P- and Q-Phases in Sodium Niobate in the Range 300–500 K, Kristallografiya, 2003, vol. 48, no. 3, pp. 493–501

    Google Scholar 

  13. Kravchenko, O.Yu., Reznichenko, L.A., Gadzhiev, G.G., et al., Properties of Na0.875Li0.125NbO3 Ceramics, Neorg. Mater., 2008, vol. 44, no. 10, pp. 1265–1280 [Inorg. Mater. (Engl. Transl.), vol. 44, no. 10, pp. 1135–1150].

    Article  Google Scholar 

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Authors and Affiliations

  1. Research Institute of Physics, Southern Federal University, pr. Stachki 194, Rostov-on-Don, 344090, Russia

    O. Yu. Kravchenko, L. A. Reznichenko, O. N. Razumovskaya, L. A. Shilkina, V. D. Komarov & I. A. Verbenko

  2. Research Institute of Physics, Dagestan Scientific Center, Russian Academy of Sciences, ul. Yaragskogo 30, Makhachkala, 367030, Dagestan, Russia

    G. G. Gadzhiev, Z. M. Omarov & Kh. Kh. Abdullaev

Authors
  1. O. Yu. Kravchenko
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  2. G. G. Gadzhiev
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  3. Z. M. Omarov
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  4. L. A. Reznichenko
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  5. Kh. Kh. Abdullaev
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  6. O. N. Razumovskaya
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  7. L. A. Shilkina
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  8. V. D. Komarov
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  9. I. A. Verbenko
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Correspondence to O. Yu. Kravchenko.

Additional information

Original Russian Text © O.Yu. Kravchenko, G.G. Gadzhiev, Z.M. Omarov, L.A. Reznichenko, Kh.Kh. Abdullaev, O.N. Razumovskaya, L.A. Shilkina, V.D. Komarov, I.A. Verbenko, 2011, published in Neorganicheskie Materialy, 2011, Vol. 47, No. 6, pp. 758–764.

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Kravchenko, O.Y., Gadzhiev, G.G., Omarov, Z.M. et al. Phase composition, microstructure, and properties of Na1 − y NbO3 − y/2 ceramics. Inorg Mater 47, 679–685 (2011). https://doi.org/10.1134/S0020168511060148

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  • DOI: https://doi.org/10.1134/S0020168511060148

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