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Solid-state synthesis of ultrafine BaTiO powders from nanocrystalline BaCO and TiO

Journal of the American Ceramic Society, ISSN: 0002-7820, Vol: 88, Issue: 9, Page: 2374-2379
2005
  • 158
    Citations
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    Usage
  • 115
    Captures
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Metrics Details

  • Citations
    158
    • Citation Indexes
      158
  • Captures
    115

Article Description

Barium titanate has been prepared by solid-state reaction of nanocrystalline TiO (70 nm) with BaCO of different particle size (650, 140, and 50 nm). The results give evidence of a strong effect of the size of BaCO in the solid-state synthesis of barium titanate. The use of nanocrystalline BaCO already leads to formation of the single-phase BaTiO after calcination for 8 h at 800°C. The final powder consists of primary particles of ≈ 100 nm, has a narrow particle size distribution with d = 270 nm, and no agglomerates larger than 800 nm. For the coarser carbonate, 4 h calcination at 1000°C are required and the final powder is much coarser. Solid-state reaction of nanocrystalline BaCO and TiO represents an alternative to chemical preparation routes for the production of barium titanate ultrafine powders. © 2005 The American Ceramic Society.

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