A coprecipitation technique to prepare BaNb2O6

N. Natarajan, Violet Samuel, Renu Pasricha, V. Ravi

Research output: Contribution to journalArticle

Abstract

A mixture of ammonium oxalate and ammonium hydroxide was used to coprecipitate barium and niobium ions as barium oxalate and niobium hydroxide under basic conditions. This precursor on calcination at 750°C yielded BaNb2O6 ceramics. This is a much lower temperature as compared to that prepared by traditional solid-state method (1000°C), as reported for the formation of BaNb2O6. Transmission electron microscope (TEM) investigations revealed that the average particle size is 100 nm for the calcined powders. The room temperature dielectric constant at 1 kHz is found to be 1100. The ferroelectric hysteresis loop parameters of these samples were also studied.

Original languageEnglish (US)
Pages (from-to)169-171
Number of pages3
JournalMaterials Science and Engineering B: Solid-State Materials for Advanced Technology
Volume117
Issue number2
DOIs
StatePublished - Mar 15 2005

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Keywords

  • Ammonia
  • Ceramics
  • Electron microscopy
  • Niobium oxide
  • Oxides

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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