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Unipolar fatigue of ferroelectric lead–zirconate–titanate

Verdier, Cyril and Lupascu, Doru C. and Rödel, Jürgen (2003):
Unipolar fatigue of ferroelectric lead–zirconate–titanate.
In: Journal of the European Ceramic Society, pp. 1409-1415, 23, (9), ISSN 09552219, [Online-Edition: http://dx.doi.org/10.1016/S0955-2219(02)00351-5],
[Article]

Abstract

In multilayer actuators the ferroelectric material is known to degrade under bipolar and to some degree under unipolar electric loading. Fatigue effects due to unipolar cycling of a commercial bulk lead–zirconate–titanate up to 4·108 cycles at 2 Ec are demonstrated. Unipolar as well as bipolar polarisation and strain hysteresis loops are measured after fatigue. Bipolar measurements after cycling show a small decrease of the remnant polarisation and an increasing asymmetry of the strain hysteresis with cycle number, which is explained by an offset polarisation. This offset polarisation is reduced under application of bipolar fields. A small offset-field is also observed. Etch grooves known to occur after bipolar fatigue are not found after unipolar fatigue. The results reveal that different mechanisms are responsible for bipolar and unipolar fatigue.

Item Type: Article
Erschienen: 2003
Creators: Verdier, Cyril and Lupascu, Doru C. and Rödel, Jürgen
Title: Unipolar fatigue of ferroelectric lead–zirconate–titanate
Language: English
Abstract:

In multilayer actuators the ferroelectric material is known to degrade under bipolar and to some degree under unipolar electric loading. Fatigue effects due to unipolar cycling of a commercial bulk lead–zirconate–titanate up to 4·108 cycles at 2 Ec are demonstrated. Unipolar as well as bipolar polarisation and strain hysteresis loops are measured after fatigue. Bipolar measurements after cycling show a small decrease of the remnant polarisation and an increasing asymmetry of the strain hysteresis with cycle number, which is explained by an offset polarisation. This offset polarisation is reduced under application of bipolar fields. A small offset-field is also observed. Etch grooves known to occur after bipolar fatigue are not found after unipolar fatigue. The results reveal that different mechanisms are responsible for bipolar and unipolar fatigue.

Journal or Publication Title: Journal of the European Ceramic Society
Volume: 23
Number: 9
Uncontrolled Keywords: Actuators; Fatigue; Ferroelectric properties; PZT
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Nonmetallic-Inorganic Materials
Zentrale Einrichtungen
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > B - Characterisation
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > B - Characterisation > Subproject B5: Model experiments about interactions between ferroelectric domains with point defects and their agglomerates
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres
DFG-Collaborative Research Centres (incl. Transregio)
Date Deposited: 15 Aug 2011 11:54
Official URL: http://dx.doi.org/10.1016/S0955-2219(02)00351-5
Additional Information:

SFB 595 B5

Identification Number: doi:10.1016/S0955-2219(02)00351-5
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