High temperature piezoelectricity of sodium substituted lithium niobate ceramics

Author

Pardo, L. ; Durán-Martín, P. ; Wolny, W.W. ; Mercurio, J.P. ; Jiménez, B.

Author_Institution

Inst. de Ciencia de Mater., CSIC, Madrid, Spain

Volume

2

fYear

1996

fDate

18-21 Aug 1996

Firstpage

915

Abstract

Ceramics of Sodium substituted Lithium Niobate (Li_1-xNa _xNbO₃) were prepared by mixed oxides and sol-gel methods. The phase diagram of the system was studied by HT XRD, calorimetry and dielectric measurements. An automatic iterative procedure was used for the determination of the piezoelectric, elastic and dielectric coefficients from impedance measurements as a function of the temperature. Piezoelectric activity was found up temperatures above 600°C. The effect of Na content on the thermal stability of the piezoelectric properties is discussed

Keywords

high-temperature effects; lithium compounds; piezoceramics; sodium compounds; 600 C; HT XRD; LiNaNbO₃; automatic iterative method; calorimetry; dielectric coefficients; dielectric measurement; elastic coefficients; high temperature piezoelectricity; mixed oxide method; phase diagram; piezoelectric coefficients; sodium substituted lithium niobate ceramic; sol-gel method; thermal stability; Calorimetry; Ceramics; Dielectric measurements; Impedance measurement; Lithium niobate; Niobium compounds; Piezoelectricity; Temperature; Thermal stability; X-ray scattering;

fLanguage

English

Publisher

ieee

Conference_Titel

Applications of Ferroelectrics, 1996. ISAF '96., Proceedings of the Tenth IEEE International Symposium on

Conference_Location

East Brunswick, NJ

Print_ISBN

0-7803-3355-1

Type

conf

DOI

10.1109/ISAF.1996.598175

Filename

598175