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

fYear

2007

fDate

27-31 May 2007

Firstpage

696

Lastpage

699

Abstract

Lead-free piezoelectric ceramics, Mn-doped (K_0.44Na_0.52Li_0.04)(Nb_0.80Ta_0.20)O₃ were prepared using the traditional solid-state reaction method. The dielectric constant (epsiv_r), piezoelectric constant (d₃₃), electromechanical coupling coefficient (k_p), and mechanical quality factor (Q_m) 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; K_0.44Na_0.52Li_0.04Nb_0.80Ta_0.20O₃: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;

fLanguage

English

Publisher

ieee

Conference_Titel

Applications of Ferroelectrics, 2007. ISAF 2007. Sixteenth IEEE International Symposium on

Conference_Location

Nara

ISSN

1099-4734

Print_ISBN

978-1-4244-1334-8

Electronic_ISBN

1099-4734

Type

conf

DOI

10.1109/ISAF.2007.4393374

Filename

4393374