Processing and Application of Ceramics (Jun 2009)

Characterization and properties of barium bismuth titanate

  • Jelena D. Bobić,
  • Mirjana M. Vijatović,
  • Tadej Rojac,
  • Biljana D. Stojanović

Journal volume & issue
Vol. 3, no. 1-2
pp. 9 – 12

Abstract

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BaBi4Ti4O15 (BBiT) was prepared from stoichiometric amounts of BaTiO3 (BT) and Bi4Ti3O12 (BIT) obtained via mechanochemical synthesis. Mechanochemical synthesis was performed in air atmosphere in a planetary ball mill. BBiTceramics were sintered at 1100°C, 1110°C and 1120°C for 1 h without pre-calcination step. The formation of phase and crystal structure of BT, BIT and BBiT were verified using X-ray analysis. The morphology of obtained powders and microstructure were examined using scanning electron microscopy. The electrical properties of sintered samples were carried out and BBiT shows behaviour typical for relaxor ferroelectrics and dielectric constant at room temperature is approximately 93.

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