Abstract
The effects of excess PbO on the properties of perovskite (Pb0.90Ba0.10)ZrO3 (PBZ10) have been investigated. The PBZ10 ceramics were prepared by a conventional mixed oxide method. Excess PbO (−1.5, 1, 3, 5 and 10 wt%) was added together with starting materials to compensate for PbO loss from evaporation during calcination and sintering. The XRD results revealed that the fraction of the orthorhombic phase has effected by PbO content. The 3 wt% PbO excess sample exhibited the maximum value of relative permittivity at the Curie temperature, while the 1 wt% PbO excess sample showed maximum value of piezoelectric strain coefficient d 33 and electromechanical coupling factor k p .
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