Journal of Materials Science

, Volume 43, Issue 18, pp 6116–6121

Reaction-sintering of lead-free piezoceramic compositions: (0.95 − x)Na0.5K0.5NbO3–0.05LiTaO3xLiSbO3

  • Pornsuda Bomlai
  • Sureewan Sukprasert
  • Supasarote Muensit
  • Steven J. Milne
Article

Abstract

Incorporation of LiSbO3 into the lead-free piezoceramic composition 0.95Na0.5K0.5NbO3–0.05LiTaO3 produced a change from an orthorhombic to tetragonal crystal system in samples produced by reaction-sintering. The inferred limit of solid solution along the compositional join, (0.95 − x)Na0.5K0.5NbO3–0.05LiTaO3xLiSbO3, occurred at x ~ 0.06. Differential scanning calorimetry indicated broad peaks at temperatures associated with ferroelectric–paraelectric transitions. The transition temperatures decreased with increasing values of x, up to x = 0.06. Microstructures showed secondary grain growth; a slight decrease in grain-size with increasing LiSbO3 modification was identified.

Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  • Pornsuda Bomlai
    • 1
  • Sureewan Sukprasert
    • 1
  • Supasarote Muensit
    • 2
  • Steven J. Milne
    • 3
  1. 1.Materials Science Program, Faculty of SciencePrince of Songkla UniversitySongkhlaThailand
  2. 2.Department of Physics, Faculty of SciencePrince of Songkla UniversitySongkhlaThailand
  3. 3.Institute for Materials ResearchUniversity of LeedsLeedsUK

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