Abstract
Pb1-yLay(Zr0.52Ti0.48)O3 (PLZTy) powders where y = 0, 0.015, 0.03, 0.06, 0.08, 0.10, 0.12, 0.15 and 0.20 were prepared using the hydrothermal process and their structural and dielectric properties investigated. Increasing La content is shown to enhance crystallization of the raw samples and to transform the average symmetry to tetragonal one in the calcined ones. Two anomalies are observed on the real part of the permittivity on both undoped and doped samples, at relatively high temperatures (~;180°C; ~;260°C). The anomaly located at about 180°C was interpreted as a transition from ferroelectric-rhombohedral phase to ferroelectric-quadratic phase. A polynomial law was used to fit the thermal behavior of the permittivity.
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Lamcharfi, T., Echatoui, NS., Sayouri, S., Mezzane, D., Hajji, L., Elammari, L. (2008). Dielectric Anomalies and Relaxation Behavior in Hydrothermally Processed PLZT Ferroelectric Ceramics. In: Luk'yanchuk, I.A., Mezzane, D. (eds) Smart Materials for Energy, Communications and Security. NATO Science for Peace and Security Series B: Physics and Biophysics. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-8796-7_14
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