Preparation of ferroelectric BaNb2O6 by the urea method

S. R. Dhage, Renu Pasricha, V. Ravi

Research output: Contribution to journalArticle

Abstract

A precipitate was formed when an aqueous solution of BaCl2, NbF5 and urea in required ratio (the ratio of total metal cations to the urea is five) is heated on a water bath at 100 °C. This precipitate on decomposition at 600 °C yielded the nanocrystallites of BaNb 2O6 (BN), as confirmed by X-ray diffraction study (XRD). This is a much lower temperature as compared to that prepared by traditional solid state method (1000° C) as reported for the formation of BaNb 2O6. Transmission electron microscope (TEM) investigations revealed that the average particle size is 85 nm for the calcined powders. The room temperature dielectric constant at 1 kHz is found to be 900. The ferroelectric hysteresis loop parameters of these samples were also studied.

Original languageEnglish (US)
Pages (from-to)1929-1931
Number of pages3
JournalMaterials Letters
Volume59
Issue number14-15
DOIs
StatePublished - Jun 2005

Keywords

  • Ceramics
  • Chemical synthesis
  • Electronic material
  • Ferroelectricity
  • Oxides

ASJC Scopus subject areas

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

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