Effects of CuO doping on the piezoelectric properties of KNLNS–BZ ceramics

• Published in: Journal of materials science. Materials in electronics Vol. 27; no. 7; pp. 7369 - 7373
• Main Authors: López-Juárez, Rigoberto, González-García, Federico, Villafuerte-Castrejón, M. E.
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.07.2016; Springer Nature B.V
• Subjects: Ceramics; Characterization and Evaluation of Materials; Chemistry and Materials Science; Doping; Electronics; Materials Science; Optical and Electronic Materials; Piezoelectric ceramics; Piezoelectricity; Quality factor; Transformers; Mechanical Quality Factor; Piezoelectric Property; Piezoelectric Ceramic; Bismuth Titanate; High Power Application
• ISSN: 0957-4522; 1573-482X
• DOI: 10.1007/s10854-016-4709-9

Lead-free piezoelectric ceramics with 0.96(K 0.48 Na 0.52 ) 0.95 Li 0.05 Nb 1−x Sb x O 3 –0.04BaZrO 3 (0.07 ≤ x ≤ 0.09) and 1 mol% CuO (KNLNSx–BZ–CuO) compositions were prepared with hard characteristics for possible application on piezoelectric transformers. The results showed that good piezoelectric properties were found for ceramics with x = 0.07 and 0.08 ( d 33 , d 31 and k p were similar for both compositions). The higher mechanical quality factor ( Q m ) corresponds to x = 0.07, which was close to 770. This combination of properties make the KNLNSx–BZ–CuO compositions promising materials for high power applications.