Influence of different parameters on the particle and crystallite sizes of barium titanate prepared by an alkoxide sol-gel method

Yoshio Kobayashi, Tomokazu Tanase, Daisuke Nagao, Mikio Konno

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

Barium titanate nanopartieles were synthesized in water/alcohol solutions by the hydrolysis of complex alkoxide precursor that was prepared by reflux of metallic barium and tetraethylorthotitanate in the alcohol. The alcohols employed were ethanol, 1-butanol and 1-octanol, which have different chain lengths. High hydrolysis reaction temperature produced small particles with small crystallite sizes. Particle and crystallite sizes were also dependent on alcohol species. For ethanol, crystallite size increased from 10.3 to 21.0 nm with an increase in water concentration. The crystallite size also increased from 13.0 to 42.9 nm for 1-butanol and from 26.6 to 52.9 nm for 1-octanol, respectively, with an increase in water concentration. Amorphous or low crystallinity products were formed for the 1-butanol and the 1-octanol at high water concentrations.

Original languageEnglish
Pages (from-to)661-666
Number of pages6
JournalJournal of the Ceramic Society of Japan
Volume115
Issue number1346
DOIs
Publication statusPublished - 2007 Oct

Keywords

  • Barium titanate
  • Complex alkoxide
  • Nanoparticle
  • Phase separation
  • Sol-gel

ASJC Scopus subject areas

  • Ceramics and Composites
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

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