Title :
Dielectric and piezoelectric properties of (K0.5 Na0.5)0.97(Nb0.96Sb0.04)O3 ceramics according to the amount of CeO2 addition
Author :
Oh, YoungKwang ; Seo, Byungho ; Lee, Sangho ; Yoo, Juhyun ; Park, Durkwon ; Kim, Insung ; Song, Jaesung
Author_Institution :
Dept. of Electr. Eng., Semyung Univ., Jechon, South Korea
Abstract :
In this study, non-stoichiometric composition of lead-free (K0.5Na0.5)0.97(Nb0.96Sb0.04)O3 ceramics were fabricated. And then, their dielectric and piezoelectric properties were investigated according to the CeO2 addition. In this ceramic composition, CeO2 addition improved sinteribility, electromechanical coupling factor kp, mechanical quality factor Qm, piezoelectric constant d33 and g33. At the sintering temperature of 1100°C and 0.2wt% CeO2 added specimen, the optimum values of density = 4.359g/cm3 kp = 0.443, Qm = 588, εr = 444, d33 = 158 pC/N, and g33 = 40.4mVm/N, were obtained respectively. Taking into consideration above physical properties, it is considered that this composition is applicable to lead-free haptic piezoelectric actuators.
Keywords :
cerium compounds; chemical analysis; electrostriction; piezoceramics; piezoelectricity; potassium compounds; sintering; sodium compounds; (K0.5Na0.5)0.97(Nb0.96Sb0.04)O3-CeO2; ceramic composition; dielectric properties; electromechanical coupling factor; lead-free haptic piezoelectric actuators; material fabrication; mechanical quality factor; nonstoichiometric composition; piezoelectric constant; piezoelectric properties; sinteribility; temperature 1100 degC; Ceramics; Dielectrics; Grain size; Haptic interfaces; Lead; Piezoelectric actuators; Temperature; haptic piezoelectric actuator; lead-free; non-stoichiometric;
Conference_Titel :
Applications of Ferroelectrics (ISAF), 2010 IEEE International Symposium on the
Conference_Location :
Edinburgh
Print_ISBN :
978-1-4244-8190-3
Electronic_ISBN :
1099-4734
DOI :
10.1109/ISAF.2010.5712224
