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Heterogeneity of fatigue in bulk lead zirconate titanate

Zhang, Yong and Lupascu, Doru C. and Aulbach, Emil and Baturin, Ivan S. and Bell, Andrew and Rödel, Jürgen (2005):
Heterogeneity of fatigue in bulk lead zirconate titanate.
In: Acta Materialia, pp. 2203-2213, 53, (8), ISSN 13596454,
[Online-Edition: http://dx.doi.org/10.1016/j.actamat.2005.01.048],
[Article]

Abstract

The spatial heterogeneity of fatigue in commercial ferroelectric lead zirconate titanate ceramics was experimentally investigated. All parameters measured on fatigued samples are spatially highly heterogeneous including large signal polarisation and strain hysteresis loops (remnant polarisation Pr, coercive field Ec, bias field Ebias, and strain asymmetry γ) as well as the small signal parameters determined from field dependent converse piezoelectric measurements (remnant piezoelectric coefficient dr, coercive field Ec, offset piezoelectric coefficient doffset, and bias field Ebias). The local strain asymmetry γ was found to linearly depend on the local bias field Ebias. An analogous relation is established for doffset and Ebias. Switching time retardation is similarly heterogeneous across the sample. The previously determined stretched exponential polarisation relaxation equally well occurs locally. A spatial correlation to the observed microcrack densities could not be found.

Item Type: Article
Erschienen: 2005
Creators: Zhang, Yong and Lupascu, Doru C. and Aulbach, Emil and Baturin, Ivan S. and Bell, Andrew and Rödel, Jürgen
Title: Heterogeneity of fatigue in bulk lead zirconate titanate
Language: English
Abstract:

The spatial heterogeneity of fatigue in commercial ferroelectric lead zirconate titanate ceramics was experimentally investigated. All parameters measured on fatigued samples are spatially highly heterogeneous including large signal polarisation and strain hysteresis loops (remnant polarisation Pr, coercive field Ec, bias field Ebias, and strain asymmetry γ) as well as the small signal parameters determined from field dependent converse piezoelectric measurements (remnant piezoelectric coefficient dr, coercive field Ec, offset piezoelectric coefficient doffset, and bias field Ebias). The local strain asymmetry γ was found to linearly depend on the local bias field Ebias. An analogous relation is established for doffset and Ebias. Switching time retardation is similarly heterogeneous across the sample. The previously determined stretched exponential polarisation relaxation equally well occurs locally. A spatial correlation to the observed microcrack densities could not be found.

Journal or Publication Title: Acta Materialia
Volume: 53
Number: 8
Uncontrolled Keywords: Dielectrics; Ferroelectrics; Functional ceramics
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
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > D - Component properties > Subproject D1: Mesoscopic and macroscopic fatigue in doped ferroelectric ceramics
11 Department of Materials and Earth Sciences > Material Science
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > D - Component properties
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 11:43
Official URL: http://dx.doi.org/10.1016/j.actamat.2005.01.048
Additional Information:

SFB 595 Cooperation B5, D1

Identification Number: doi:10.1016/j.actamat.2005.01.048
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