Abstract

ABSTRACTWe have studied the dielectric response dependence on frequency for piezoelectric ceramics based on lead zirconate - titanate (PZT) with three types of electrodes. There are found increase dielectric losses with the decrease of the frequency. Maximum value of tgδ depends on type of electrodes. Also for all samples observed relaxation of dielectric response on low frequency 10−2 – 103 Hz at time. But the total relaxation times are different. This behavior is explained by phenomena on the ceramics – electrode boundary.

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