Fatigue and aging in ferroelectric PbZr0.2Ti0.8O3/YBa2Cu3O7heterostructures
作者:
R. Ramesh,
W.K. Chan,
B. Wilkens,
T. Sands,
J.M. Tarascon,
V.G. Keramidas,
J.T. Evans,
期刊:
Integrated Ferroelectrics
(Taylor Available online 1992)
卷期:
Volume 1,
issue 1
页码: 1-15
ISSN:1058-4587
年代: 1992
DOI:10.1080/10584589208215562
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
We have carried out fatigue, aging and retention studies of epitaxial ferroelectric PbZr0.2Ti0.8O3/YBa2Cu3O7heterostructures, grown by pulsed laser deposition. The capacitors show fatigue lifetime of better than 1010cycles. We find that the fatigue process is reversible by the application of a 2 second “pulsed poling” treatment at the fatigue voltage. These results suggest that the loss of switchable polarization with cycling is due to domain wall pinning; however, the role of space charge effects at the electrodefilm interfaces cannot be ruled out. Indeed, the overall fatigue performance may be controlled by a combination of these two factors. These heterostructures show excellent resistance to aging (extrapolated lifetime of better than 1011seconds and good logic state retention characteristics (1011seconds).
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