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.
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Acoustics and Ultrasonics
- Surfaces, Coatings and Films