Title :
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
Abstract :
High power piezoelectric characteristics of perovskite-type lead-free ferroelectric ceramics, 0.88(Bi0.5Na0.5)TiO3-0.04(Bi0.5Li0.5)TiO3-0.08(Bi0.5Na0.5)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, vo-p for BNLKT4-8Mn0.4 and KN-Mn0.8 reached larger than 2 m/s. A mechanical quality factor, Qm, at large-amplitude vibration for all compositions including PZT-based ceramics decreased with increasing the vo-p. At the large amplitude vibration level of vo-p>;0.6 m/s, Qm 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; (Bi0.5Na0.5)TiO3-(Bi0.5Li0.5)TiO3-(Bi0.5Na0.5)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;
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.2010.5712262
