Abstract
ZnO whiskers and Sb 2O 3 co-modified lead zirconate titanate (denoted as PZT/ZnO w /Sb 2O 3) piezoelectric composites were fabricated using a solid state sintering technique. The characteristic diffraction peaks of the PZT perovskite and ZnO phases were identified from all the composites, suggesting the retention of these individual phases. The grain size of PZT was found to be reduced with Sb 2O 3 addition. A high relative density of 96.5%–99.1% was achieved in PZT co-doped with ZnO w and Sb 2O 3. Both the piezoelectric and mechanical properties of the PZT/ZnO w /Sb 2O 3 composites showed significant improvement over the monolithic PZT. The intrinsic effects of ZnO w and Sb 2O 3 on the electrical and mechanical properties of the PZT/ZnO w /Sb 2O 3 composites were discussed.
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