Kounga, Alain B. ; Granzow, Torsten ; Aulbach, Emil ; Hinterstein, Manuel ; Rödel, Jürgen (2008):
High-temperature poling of ferroelectrics.
In: Journal of Applied Physics, 104 (2), pp. 024116-1. ISSN 00218979,
[Article]

Abstract

The poling behavior of a lead-zirconate-titanate piezoelectric ceramic is investigated by measurements of the ferroelectric hysteresis, the longitudinal piezoelectric coefficient, and field-cooling poling experiments. At high temperatures, the decrease in the coercive field facilitates poling at lower electric fields, resulting in higher values of the longitudinal piezoelectric coefficient. However, there exists a threshold field of about 150 V/mm, below which fully poled samples cannot be obtained even when field cooling from temperatures above the transition. Further, a temperature regime below the Curie temperature is observed, where a polarization under field can be measured, but a remanent polarization is not stable. The results are discussed with respect to the phase transition behavior. (c) 2008 American Institute of Physics.

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