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Ferroelectric Phase Transitions in Non-Stoichiometric Sodium-Bismuth Titanate Ceramics

  • Proceedings of the XXI National Conference on Magnetoelectrics Physics
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Bulletin of the Russian Academy of Sciences: Physics Aims and scope

Abstract

Features are studied of the phase formation, structural parameters, microstructure, and dielectric and ferroelectric properties of non-stoichiometric (Na0.5 + xBi0.5)TiO3 ceramics with x = 0–0.1. The investigated samples exhibit ferroelectric phase-transition behavior as anomalies and peaks in dielectric permittivity near 400 and 600 K, respectively. Study of the second harmonic generation shows that phase transitions near 400 K exhibit relaxor-type behavior, indicating there are polar regions in the nonpolar matrix. An increase in the Na/Bi ratio in the initial compositions improves the dielectric and ferroelectric properties of the ceramics.

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Correspondence to E. D. Politova.

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Original Russian Text © E.D. Politova, D.A. Strebkov, A.V. Mosunov, N.V. Golubko, G.M. Kaleva, N.V. Sadovskaya, S.Yu. Stefanovich, 2018, published in Izvestiya Rossiiskoi Akademii Nauk, Seriya Fizicheskaya, 2018, Vol. 82, No. 3, pp. 312–315.

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Politova, E.D., Strebkov, D.A., Mosunov, A.V. et al. Ferroelectric Phase Transitions in Non-Stoichiometric Sodium-Bismuth Titanate Ceramics. Bull. Russ. Acad. Sci. Phys. 82, 269–272 (2018). https://doi.org/10.3103/S106287381803019X

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  • DOI: https://doi.org/10.3103/S106287381803019X

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