Effect of PZT particle size on dielectric and piezoelectric properties of PZT–cement composites

In this work, the effect of PZT particle size on the properties of PZT–PC composites was investigated. PZT of various median particle sizes (3.8–620μm) were used at 50% by volume to produce the composites. The results showed that the dielectric properties of the composites increased marginally with...

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Bibliographic Details
Published in:Current applied physics 2007-07, Vol.7 (5), p.574-577
Main Author: Chaipanich, A.
Format: Article
Language:English
Subjects:
Composite
Dielectric
Particle size
Piezoelectric
PZT
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Summary:In this work, the effect of PZT particle size on the properties of PZT–PC composites was investigated. PZT of various median particle sizes (3.8–620μm) were used at 50% by volume to produce the composites. The results showed that the dielectric properties of the composites increased marginally with PZT particle size where εr=176 and 167 for composites with 620μm and 3.8μm PZT particle size, respectively. A noticeable increase in d33 values was also found when the particle size was increased where the composite with 620μm PZT particles size was found to have d33 value of 26pC/N compared to 17pC/N for the composite with 3.8μm PZT particle size. The enhancement in the dielectric and piezoelectric properties was contributed to lesser contacting surfaces between the cement matrix and the PZT particles.
ISSN:1567-1739
1878-1675
DOI:10.1016/j.cap.2006.11.036