Title :
Preparation and Characterization of Lead-Free Niobate-Tantalate Piezoelectric Ceramics
Author :
Fangfang Wang ; Kraraki, T. ; Bing Liang
Author_Institution :
Shenyang Inst. of Chem. Technol., Shenyang
Abstract :
Lead-free piezoelectric ceramics, Mn-doped (K0.44Na0.52Li0.04)(Nb0.80Ta0.20)O3 were prepared using the traditional solid-state reaction method. The dielectric constant (epsivr), piezoelectric constant (d33), electromechanical coupling coefficient (kp), and mechanical quality factor (Qm) with different doping value were investigated. The results indicated that the doping of Mn could decrease sintering temperature, and improve density the ceramic as well as piezoelectric properties. The ceramics doped with 0.2 wt% MnCO3 had the best piezoelectric properties.
Keywords :
Q-factor; density; doping; electromechanical effects; lithium compounds; manganese compounds; niobium compounds; permittivity; piezoceramics; piezoelectricity; potassium compounds; sintering; sodium compounds; solid-state phase transformations; tantalum compounds; K0.44Na0.52Li0.04Nb0.80Ta0.20O3:MnCO3; density; dielectric constant; doping value; electromechanical coupling coefficient; lead-free niobate-tantalate piezoelectric ceramics; mechanical quality factor; piezoelectric constant; piezoelectric properties; sintering temperature; solid-state reaction method; Ceramics; Design engineering; Dielectric constant; Environmentally friendly manufacturing techniques; Erbium; Grain boundaries; Grain size; Materials science and technology; Solid state circuits; Temperature dependence;
Conference_Titel :
Applications of Ferroelectrics, 2007. ISAF 2007. Sixteenth IEEE International Symposium on
Conference_Location :
Nara
Print_ISBN :
978-1-4244-1334-8
Electronic_ISBN :
1099-4734
DOI :
10.1109/ISAF.2007.4393374
