KxNa1 - xNbO3powder synthesized by molten-salt process

J. T. Zeng, Kin Wing Kwok, H. L.W. Chan

Research output: Journal article publicationJournal articleAcademic researchpeer-review

43 Citations (Scopus)

Abstract

KxNa1 - xNbO3ceramic powders have been successfully synthesized in different salts (NaCl, KCl, NaCl-KCl). Our results reveal that KxNa1 - xNbO3powders with single-phase perovskite structure can be formed at a low temperature such as 750 °C. The type of salts has significant effects on the morphology and chemical composition of the powders. As Na+has a higher diffusing rate and occupies the A-site in the perovskite structure more easily as compared to K+, the powder contains only a small amount of K+(x ∼ 0.10) when it is synthesized according to formula K0.5Na0.5NbO3and in a flux containing the same molar content of Na+and K+. By using a NaCl or KCl salt, the K+concentration x can be adjusted to almost 0 and 0.77, respectively.
Original languageEnglish
Pages (from-to)409-411
Number of pages3
JournalMaterials Letters
Volume61
Issue number2
DOIs
Publication statusPublished - 1 Jan 2007

Keywords

  • Ferroelectrics
  • Perovskites
  • Piezoelectric materials
  • Powder technology

ASJC Scopus subject areas

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

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