Title :
Dielectric and piezoelectric properties of (Li0.04 (Na0.54+xK0.46)0.96(Nb0.81Ta0.15Sb0.04) O3 ceramics
Author :
Noh, Jung-rae ; Lee, Kab-soo ; Yoo, Juhyun
Author_Institution :
Dept. of Electr. Eng., Semyung Univ., Jechon, South Korea
Abstract :
In this study, [Li0.04(Na0.54+xK0.46)0.96](Nb0.81Ta0.15 Sb0.04)O3 ceramics are prepared by the conventional solid-state solution processes. All the samples have high density, ranging from 4.72 to 4.77(g/cm3). The dielectric and piezoelectric properties were enhanced due to Na excess. As the result, excellent properties of density = 4.73(g/cm3), kp = 0.46, and d33 = 279(pC/N) were obtained in the composition with x = 0.005.
Keywords :
lithium compounds; permittivity; piezoceramics; potassium compounds; sodium compounds; Li0.04(Na0.54+xK0.46)0.96(Nb0.81Ta0.15Sb0.04)O3; conventional solid-state solution processes; dielectric properties; piezoelectric ceramics; piezoelectric properties; Ceramics; Couplings; Dielectric constant; Lead; Powders; Q factor; NKN; Na excess; lead-free;
Conference_Titel :
Applications of Ferroelectrics held jointly with 2012 European Conference on the Applications of Polar Dielectrics and 2012 International Symp Piezoresponse Force Microscopy and Nanoscale Phenomena in Polar Materials (ISAF/ECAPD/PFM), 2012 Intl Symp
Conference_Location :
Aveiro
Print_ISBN :
978-1-4673-2668-1
DOI :
10.1109/ISAF.2012.6297802
