Title :
P3J-3 SAW Method for Measuring of Relaxation Process in Ferroelectric Ceramics
Author :
Rybianets, Andrey ; Motsarenko, Tatiana ; Goland, Vladimir ; Kushkuley, Leonid
Author_Institution :
Ultrashape Ltd., Yoqneam
Abstract :
The results of experimental study of the DC electric field influence on SAW propagation parameters in PZT and lead titanate piezoceramics are presented. The relative changes in the SAW delay time and attenuation as a function of the magnitude and direction of the applied dc electric field was obtained. Qualitative models for domain orientation and space charge relaxation processes occurring in piezoceramics with different ferroelectric "hardness" under the dc electric field were proposed and physical mechanisms controlling SAW parameters changes were discussed.
Keywords :
dielectric relaxation; ferroelectric ceramics; hardness; lead compounds; piezoceramics; space charge; surface acoustic waves; DC electric field; SAW propagation parameters; domain orientation; ferroelectric ceramics; ferroelectric hardness; lead titanate piezoceramics; space charge relaxation processes; Attenuation; Ceramics; Delay effects; Ferroelectric materials; Lithium niobate; Piezoelectric materials; Space charge; Surface acoustic waves; Time measurement; Titanium compounds;
Conference_Titel :
Ultrasonics Symposium, 2007. IEEE
Conference_Location :
New York, NY
Print_ISBN :
978-1-4244-1384-3
Electronic_ISBN :
1051-0117
DOI :
10.1109/ULTSYM.2007.480
