Fabrication and electrical properties of textured Na1/2Bi 1/2TiO3-BaTiO3 ceramics by reactive-templated grain growth

Y. K. Yan, H. P. Zhou, W. Zhao, D. Liu

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Abstract

The <001> fiber-textured Na1/2 Bi1/2TiO 3-BaTiO3 (6 mol% BaTiO3) ceramics were fabricated by reactive-templated grain growth (RTGG), using plate-like Bi 4Ti3O14 (BiT) particles prepared by a molten salt method as templates. The effects of sintering conditions on texture development and microstructure evolvement were both studied, and the mechanisms of grain orientation and densification were discussed. High Lotgering factor (≥96%) and high density (≥96% theoretic density) textured Na1/2 Bi1/2TiO3-6BaTiO3 ceramics were prepared by using the max templates concentration supplying 100% Bi in the final product, and sintering at 1200 °C for 10 h. The NBT-6BT obtained exhibited good piezoelectric performance with piezoelectric coefficient d 33 ∈=∈241pC/N, and electromechanical coupling factor k p ∈=∈41.2%, k t ∈=∈66.5% at room temperature.

Original languageEnglish (US)
Pages (from-to)246-250
Number of pages5
JournalJournal of Electroceramics
Volume21
Issue number1-4 SPEC. ISS.
DOIs
StatePublished - Dec 1 2008

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Mechanics of Materials
  • Electrical and Electronic Engineering
  • Materials Chemistry

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