• Density variation and piezoelectric properties of Ba(Ti1−𝑥Sn𝑥)O3 ceramics prepared from nanocrystalline powders

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      https://www.ias.ac.in/article/fulltext/boms/035/05/0847-0852

    • Keywords

       

      Nanocrystalline powder; high energy ball mill; sintering; ferroelectric.

    • Abstract

       

      Nanocrystalline powders of tin-doped barium titanate with different concentrations of tin have been synthesized by a combination of solid state reaction and high-energy ball milling. The average particle size of the milled powders as determined from TEM analysis was about 5.96 nm. Analysis of all the milled powders using X-ray diffraction method showed single phase perovskite structure. The density variation of the ceramics with sintering temperature has been studied by sintering the samples at different temperatures. Density variation results show that 1350°C is the optimum sintering temperature for tin-doped barium titanate ceramics. SEM micrographs show high density and increasing trend of grain size with increasing content of Sn. The ferroelectricity decreases with increasing concentration of Sn. The electromechanical coupling coefficient also decreases with increasing Sn content corroborating decreasing trend of ferroelectricity. The bipolar strain curves show piezoelectric properties of the prepared ceramics.

    • Author Affiliations

       

      A K Nath1 Nirmali Medhi1

      1. Department of Physics, Sri Venkateswara College, University of Delhi, New Delhi 110 021, India
    • Dates

       
  • Bulletin of Materials Science | News

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