Abstract

Dielectric properties of lead titanate zirconate were determined between room temperature and 140°C at frequencies between 0.1 and 10 cps. A measured increase in dielectric constant and dissipation factor at low frequency and high temperature was interpreted as an anomalous conduction phenomenon, rather than as an effect due to ferroelectric polarization. Over the frequency and temperature range studied the relationship between the real and the imaginary components of the dielectric constant was found to be linear. The data for unpoled ceramic and for material which had been poled to a maximum in piezoelectric activity were quite similar.

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