DOI: 10.1063/1.3463318. Bipolar and unipolar electrical fatigue in ferroelectric lead zirconate titanate thin films: An experimental comparison study

Bipolar and unipolar electrical fatigue in ferroelectric lead zirconate titanate thin films: An experimental comparison study

10.1063/1.3463318

Crossref journal-article

AIP Publishing

Journal of Applied Physics (317)

Abstract

By performing standard positive-up-negative-down, hysteresis-loop and dielectric measurements on the ferroelectric lead zirconate titanate thin-film capacitors subject to bipolar/unipolar electrical cycling, we show that unipolar fatigue is evident though still less severe than bipolar fatigue conducted at the same voltage. That has been attributed to a series of periodic events of polarization backswitching (driven by the residual depolarization field) and switching (driven by the residual applied field) during unipolar electrical cycling, and explained using the LPD-SICI model (LPD-SICI stands for local phase decomposition caused by switching-induced charge injection). The dielectric results have been used to estimate the effective thickness di of the fatigue-induced degraded (pyrochlorelike) interfacial layer after bipolar/unipolar fatigue, which has not been done so far to our best knowledge. The fact that di is still much less than the film thickness even after the most severe bipolar fatigue strongly suggests that polarization fatigue in ferroelectrics is an interface effect, not a bulk one.

Bibliography

Lou, X. J., & Wang, J. (2010). Bipolar and unipolar electrical fatigue in ferroelectric lead zirconate titanate thin films: An experimental comparison study. Journal of Applied Physics, 108(3).

Authors 2

X. J. Lou (first)
J. Wang (additional)

References 45 Referenced 32

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Dates

Type	When
Created	15 years ago (Aug. 5, 2010, 7:11 p.m.)
Deposited	2 years, 1 month ago (July 5, 2023, 2:22 p.m.)
Indexed	1 month ago (July 30, 2025, 6:54 a.m.)
Issued	15 years ago (Aug. 1, 2010)
Published	15 years ago (Aug. 1, 2010)
Published Online	15 years ago (Aug. 5, 2010)
Published Print	15 years ago (Aug. 1, 2010)

Funders 0

None

BibTeX

@article{Lou_2010, title={Bipolar and unipolar electrical fatigue in ferroelectric lead zirconate titanate thin films: An experimental comparison study}, volume={108}, ISSN={1089-7550}, url={http://dx.doi.org/10.1063/1.3463318}, DOI={10.1063/1.3463318}, number={3}, journal={Journal of Applied Physics}, publisher={AIP Publishing}, author={Lou, X. J. and Wang, J.}, year={2010}, month=aug }

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