A model for retention on short, intermediate and long time-scale in ferroelectric thin films

Details A model for retention on short, intermediate and long time-scale in ferroelectric thin films A model for retention on short, intermediate and long time-scale in ferroelectric thin films

2008-12-04

arxiv.org/abs/0812.0897v1

Journal of Applied Physics 105, 094107 (2009)

Physics

Condensed Matter

Materials Science

15 pages and 3 figures

Scientific paper

10.1063/1.3106663

We developed a model with no adjustable parameter for retention loss at short and long time scale in ferroelectric thin-film capacitors. We found that the predictions of this model are in good agreement with the experimental observations in the literature. In particular, it explains why a power-law function shows better fitting than a linear-log relation on a short time scale (10^-7 s to 1 s) and why a stretched exponential relation gives more precise description than a linear-log plot on a long time scale (>100 s), as reported by many researchers in the past. More severe retention losses at higher temperatures and in thinner films have also been correctly predicted by the present theory.

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