Influence of pinning effects on the ferroelectric hysteresis in cerium-doped
- 26 March 2001
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 63 (17) , 174101
- https://doi.org/10.1103/physrevb.63.174101
Abstract
The temporal behavior of ferroelectric domains under external electric field is investigated in cerium-doped strontium-barium-niobate crystals using quasistatic surface-charge detection. The polarization reversal depends strongly on frequency, temperature, dark conductivity, and doping concentration. This so-called electrical aging is attributed to electric pinning centers that hinder the domain-wall motion. We discuss the existence of pinning centers on the basis of the quenched random-field model.Keywords
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