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

fYear

2010

fDate

9-12 Aug. 2010

Firstpage

1

Lastpage

5

Abstract

In this study, non-stoichiometric composition of lead-free (K_0.5Na_0.5)_0.97(Nb_0.96Sb_0.04)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 Q_m, 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, ε_r = 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; (K_0.5Na_0.5)_0.97(Nb_0.96Sb_0.04)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;

fLanguage

English

Publisher

ieee

Conference_Titel

Applications of Ferroelectrics (ISAF), 2010 IEEE International Symposium on the

Conference_Location

Edinburgh

ISSN

1099-4734

Print_ISBN

978-1-4244-8190-3

Electronic_ISBN

1099-4734

Type

conf

DOI

10.1109/ISAF.2010.5712224

Filename

5712224