Abstract
The aging degradation of the piezoelectric properties of lead zirconate titanate (PZT) was investigated at different heat treatment temperatures (30 to 80% of Curie temperature (TC)). The aging degradation behavior was represented by the decrease of piezoelectric charge coefficient (d33 ) and electromechanical coupling factor (k). The results showed that the degree of aging degradation of piezoelectric properties increased with increasing heat treatment temperature. The aging degradation was more pronounced when the heat treatment temperature was greater than 50% of TC. These results can be applied to predict the aging rate of electronic devices containing a PZT component.
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