Basic Studies of Electrically Controlled Elasticity of Lead Zirconate Titanate (PZT) Ceramic and its Application to Intercepting Elastic Waves

Author

Takarada, J. ; Tahara, K. ; Ueda, H. ; Imoto, K. ; Date, M. ; Fukada, E. ; Yamamoto, K. ; Tajitsu, Y.

Author_Institution

Kansai Univ., Osaka

fYear

2007

fDate

27-31 May 2007

Firstpage

603

Lastpage

604

Abstract

We studied a novel technique for controlling the elastic coefficient of a piezoelectric lead zirconate titanate (PZT) ceramic by connecting a negative-capacitance circuit that behaves as a "negative capacitor". Thus, we can realize control through a mechanism in which PZT is softened and hardened. On the basis of this technology, we developed a simple experimental system for intercepting elastic waves in the frequency range from 8 kHz to 110 kHz. We determined the attenuation factor in transmission loss of the experimental system, which was more than 10 dB in this frequency range. The maximum attenuation factor in transmission loss was about 60 dB at a frequency of 91 kHz.

Keywords

ceramic capacitors; elastic waves; elasticity; hardening; lead compounds; piezoceramics; softening; PZT; attenuation factor; elastic coefficient; elastic waves; frequency 8 kHz to 110 kHz; hardening; negative-capacitance circuit; piezoelectric lead zirconate titanate ceramics; softening; transmission loss; Attenuation; Capacitive sensors; Capacitors; Ceramics; Circuits; Elasticity; Frequency; Piezoelectric materials; Propagation losses; Titanium compounds;

fLanguage

English

Publisher

ieee

Conference_Titel

Applications of Ferroelectrics, 2007. ISAF 2007. Sixteenth IEEE International Symposium on

Conference_Location

Nara

ISSN

1099-4734

Print_ISBN

978-1-4244-1334-8

Electronic_ISBN

1099-4734

Type

conf

DOI

10.1109/ISAF.2007.4393343

Filename

4393343