Title :
Dielectric and Piezoelectric Properties of NaNbO3 - LiNbO3 - SrTiO3 Ceramics
Author_Institution :
Sustainable Mater. Res. Inst., Nagoya
Abstract :
NaNbO3 -based piezoelectric ceramics NaNbO3 -LiNbO3 -SrTiO3 have been synthesized by conventional solid state sintering method, and their dielectric and piezoelectric properties have been studied. The dielectric, piezoelectric, and electromechanical properties of 0.86NaNbO3 -0.09LiNbO3 -0.05SrTiO3 ceramics were found to be the cubic-tetragonal phase transition temperature (Tc) = 280degC, dielectric constant epsivs = 166, piezoelectric coefficient d33 = 53 pC/N, and electromechanical coupling factor kt=0.45 or more. The ceramics is a good candidate material for lead-free piezoelectric ceramic resonator application.
Keywords :
crystal resonators; electromechanical effects; ferroelectric transitions; lithium compounds; permittivity; piezoceramics; sintering; sodium compounds; strontium compounds; NaNbO3-LiNbO3-SrTiO3; conventional solid state sintering method; cubic-tetragonal phase transition; dielectric constant; dielectric properties; electromechanical coupling factor; electromechanical properties; lead-free piezoelectric ceramic resonator; piezoelectric coefficient; piezoelectric properties; temperature 280 C; Ceramics; Dielectric constant; Dielectric materials; Dielectric measurements; Environmentally friendly manufacturing techniques; Lead; Niobium compounds; Piezoelectric materials; Powders; Temperature;
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.2007.4393371
