Preparation and piezoelectric properties of CeO2-added (Na0.475K0.475Li0.05)(Nb0.92Ta0.05Sb0.03)O3lead-free ceramics

Tact Lee, Kin Wing Kwok, H. L.W. Chan

Research output: Journal article publicationJournal articleAcademic researchpeer-review

18 Citations (Scopus)

Abstract

Lead-free piezoelectric ceramics (Na0.475K0.475Li0.05)(Nb0.92Ta0.05Sb0.03)O3containing different amounts of CeO2have been prepared by a conventional mixed-oxide method. After the addition of CeO2, the sintering performance of the ceramics is improved. The ceramics can be well sintered at a higher temperature. The ceramics become dense and have better dielectric and piezoelectric properties. For the ceramic added with 0.4 wt% CeO2, the piezoelectric and dielectric properties become optimum, giving a piezoelectric coefficient of 246 pC N-1and a planar-mode electromechanical coupling coefficient of 0.50.
Original languageEnglish
Article number155402
JournalJournal of Physics D: Applied Physics
Volume41
Issue number15
DOIs
Publication statusPublished - 7 Aug 2008

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Acoustics and Ultrasonics
  • Surfaces, Coatings and Films

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