Vibration velocities under high-power driving on perovskite-type lead-free ferroelectric ceramics

Author

Nagata, Hajime ; Takai, Koudai ; Nomura, Yoji ; Sato, Shigeki ; Hiruma, Yuji ; Takenaka, T.

Author_Institution

Dept. of Electr. Eng., Tokyo Univ. of Sci., Chiba, Japan

fYear

2010

fDate

9-12 Aug. 2010

Firstpage

1

Lastpage

4

Abstract

High power piezoelectric characteristics of perovskite-type lead-free ferroelectric ceramics, 0.88(Bi_0.5Na_0.5)TiO₃-0.04(Bi_0.5Li_0.5)TiO₃-0.08(Bi_0.5Na_0.5)TiO₃ +MnCO₃ 0.4 wt% [BNLKT4-8Mn0.4] and KNbO₃+MnCO₃ 0.8 wt% [KN-Mn0.8], were focused on under large-amplitude vibration as compared with those of Pb(Zr,Ti)O₃ [PZT]-based ceramics. The maximum vibration velocities, v_o-p for BNLKT4-8Mn0.4 and KN-Mn0.8 reached larger than 2 m/s. A mechanical quality factor, Q_m, at large-amplitude vibration for all compositions including PZT-based ceramics decreased with increasing the v_o-p. At the large amplitude vibration level of v_o-p>;0.6 m/s, Q_m values of BNLKT and KN are larger than that of N6. Additionally, heat generation under a continuous driving on lead-free and hard PZT [N-6] ceramics show similar tendency as a function of vibration velocity.

Keywords

Q-factor; bismuth compounds; ferroelectric ceramics; lithium compounds; piezoelectricity; sodium compounds; vibrations; (Bi_0.5Na_0.5)TiO₃-(Bi_0.5Li_0.5)TiO₃-(Bi_0.5Na_0.5)TiO₃; mechanical quality factor; perovskite-type lead-free ferroelectric ceramics; vibration velocities; Ceramics; Lead; Manganese; Q factor; Temperature; Temperature measurement; Vibrations; bismuth sodium titanate; high-power piezoelectric properties; lead-free; potassium niobate;

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.2010.5712262

Filename

5712262