Title :
Characteristic P-E and S-E relationships of hard PZT ceramics under high drive conditions
Author :
Stevenson, P.J. ; Hall, D.A.
Author_Institution :
Mater. Sci. Centre, Manchester Univ., UK
Abstract :
The use of hard PZT ceramic as the piezoelectric element in high power acoustic sources is well established. With the onset of high electric drive levels (>0.6 kV/mm), such materials exhibit increasing dielectric non-linearity and loss as a result of hysteretic ferroelectric domain wall motion. The aims of the present work are to derive the effective high field dielectric and piezoelectric coefficients of hard PZT ceramics by analysis of the measured P-E (polarisation-field) and S-E (strain-field) relationships respectively. The paper deals with the effects of field amplitude and cycling time on the behaviour of standard commercial materials
Keywords :
dielectric hysteresis; dielectric losses; dielectric polarisation; electric domain walls; ferroelectric materials; lead compounds; piezoceramics; PZT; PbZrO3TiO3; dielectric coefficients; dielectric loss; dielectric nonlinearity; ferroelectric domain wall motion; hard PZT ceramic; high field drive; high power acoustic source; hysteresis; piezoelectric coefficients; polarisation-field characteristics; stain-field characteristics; Aging; Ceramics; Dielectric losses; Dielectric materials; Dielectric measurements; Ferroelectric materials; Optical amplifiers; Permittivity; Piezoelectric transducers; Temperature;
Conference_Titel :
Applications of Ferroelectrics, 1996. ISAF '96., Proceedings of the Tenth IEEE International Symposium on
Conference_Location :
East Brunswick, NJ
Print_ISBN :
0-7803-3355-1
DOI :
10.1109/ISAF.1996.602757
