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      https://www.ias.ac.in/article/fulltext/boms/029/03/0221-0223

    • Keywords

       

      Ceramics; oxides; electron microscopy; X-ray diffraction; ferroelectricity.

    • Abstract

       

      An aqueous mixture of ammonium oxalate and ammonium hydroxide was used to coprecipitate barium and strontium ions as oxalates and niobium ions as hydroxide under basic conditions. This precursor on calcining at 750°C yielded Sr0.5Ba0.5Nb2O6 phase. This is a much lower temperature than that prepared by traditional solid state method (1000°C) as reported for the formation of Sr0.5Ba0.5Nb2O6 (SBN). Transmission electron microscopic (TEM) investigations revealed that the average particle size was 80 nm for the calcined powders. The room temperature dielectric constant at 1 kHz was found to be 1100. The ferroelectric hysteresis loop parameters of these samples were also studied.

    • Author Affiliations

       

      A Vadivel Murugan1 A B Gaikwad2 V Samuel3 V Ravi3

      1. Department of Information Technology, Centre for Materials for Electronics Technology (C-MET), Pune 411 008, India
      2. Centre for Materials Characterization, National Chemical Laboratory, Pune 411 008, India
      3. Physical and Materials Chemistry Division, National Chemical Laboratory, Pune 411 008, India
    • Dates

       
  • Bulletin of Materials Science | News

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