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Abstract
Lead zirconate titanate (PZT)-cement composites of 0-3 connectivity were produced and the effects of the frequency and electric field on the ferroelectric polarization-electric field (P-E) hysteresis of the composites were investigated. It was found that there was an increase in both the instantaneous remnant polarization (P ir ) and coercive field (E ic ) when the applied field increased. The instantaneous remnant polarization (P ir ) was found to reduce when the frequency was increased. The ferroelectric hysteresis loops only existed when the composites were subjected to lower frequency; i.e. at 20 and 40 Hz. At higher frequency, the loops tended to stretch out, showing more of a lossy characteristic.
ACKNOWLEDGMENTS
The authors gratefully acknowledge the Thailand Research Fund (TRF) and the Commission on Higher Education (CHE) for financial support.
Communicated by Prof. Amar Bhalla