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Crystallography Reports

, Volume 63, Issue 2, pp 266–270 | Cite as

Specific Features of the Structure and Properties of High-Temperature Oxide Materials Based on Bismuth Sodium Titanate

  • E. D. Politova
  • G. M. Kaleva
  • N. V. Golubko
  • A. V. Mosunov
  • N. V. Sadovskaya
  • D. A. Belkova
  • S. Yu. Stefanovich
Nanomaterials and Ceramics

Abstract

Single-phase ceramic samples from the region of morphotropic phase boundary in the (1–x)(Na0.5Bi0.5)TiO3–xBaTiO3 and (1–y)[(Na0.5Bi0.5)TiO3–xBaTiO3]–yBi(Mg0.5Ti0.5)O3 systems, modified by low-melting LiF and 0.6NaCl–0.4LiF additives, have been prepared by solid-state synthesis. The effect of additives on the phase formation, structural parameters, and dielectric and ferroelectric properties of the ceramics has been studied. A decrease in the ceramic sintering temperature is found. A slight increase in the unit-cell volume upon modification of the ceramics under study by lithium fluoride and 0.6NaCl–0.4LiF additive is revealed. First-order ferroelectric phase transitions near 700–800 K have been observed. The prospects for improving the piezoelectric properties of modified ceramic samples are proved.

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Copyright information

© Pleiades Publishing, Inc. 2018

Authors and Affiliations

  • E. D. Politova
    • 1
  • G. M. Kaleva
    • 1
  • N. V. Golubko
    • 1
  • A. V. Mosunov
    • 1
  • N. V. Sadovskaya
    • 1
  • D. A. Belkova
    • 2
  • S. Yu. Stefanovich
    • 1
    • 2
  1. 1.Karpov Institute of Physical ChemistryMoscowRussia
  2. 2.Moscow State UniversityMoscowRussia

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