• A coprecipitation technique to prepare NaNbO3 and NaTaO3

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    • Keywords


      Ceramics; oxides; chemical synthesis; X-ray methods; electronic materials; electron microscopy.

    • Abstract


      A simple coprecipitation technique has been used successfully for the preparation of pure, ultrafine, single phases of NaNbO3 (NN) and NaTaO3 (NT). An alcoholic solution of ammonium carbonate and ammonium hydroxide was used to precipitate Na+ and Nb5+ (or Ta5+) cations under basic conditions as carbonate and hydroxide, respectively. On heating at 700°C, these precursors produce respective products. For comparison, both NN and NT powders were also prepared by the traditional solid state method. The phase purity and lattice parameters were studied by powder X-ray diffraction (XRD). The particle size and morphology were studied by scanning electron microscopy (SEM).

    • Author Affiliations


      V Samuel1 A B Gaikwad2 V Ravi3

      1. Catalysis Division, National Chemical Laboratory, 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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      Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
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