Abstract
Infrared reflection and transmission measurements on PbZrO3 single crystal, ceramic and thin films in the 10-600 K temperature range enabled us to determine the dielectric response function and discuss the dynamic origin of the antiferroelectric transition. The strong dielectric anomaly is caused by an overdamped mode in the 10 cm−1 range which is assigned to anharmonic hopping of Pb atoms whereas the phonon modes contribute only by ∼100 to the relative permittivity value. Thin films show somewhat weaker and more smeared phonon spectra and lower permittivity values.
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