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Temperature and driving field dependence of fatigue processes in PZT bulk ceramics

Glaum, Julia ; Granzow, Torsten ; Schmitt, Ljubomira Ana ; Kleebe, Hans-Joachim ; Rödel, Jürgen (2011):
Temperature and driving field dependence of fatigue processes in PZT bulk ceramics.
In: Acta Materialia, 59 (15), pp. 6083-6092. ISSN 1359-6454,
DOI: 10.1016/j.actamat.2011.06.017,
[Article]

Abstract

The temperature- and field-dependent degradation properties of bulk Pb(Zr,Ti)O3 material (PZT) under a unipolar electric field were investigated. Unipolar cycling leads to the build-up of an internal bias field based on the agglomeration of charges at grain boundaries. A simple model was developed which describes the general dynamics of unipolar fatigue and its dependence on temperature and driving field. Comparing the large and small signal permittivity before and after fatigue led to the conclusion that domain walls became clamped by the agglomerated charges. This clamping effect could be visualized by transmission electron microscopy (TEM). Additionally, the TEM investigations revealed that unipolar fatigue leads to a weakening of the microstructure and to the development of microcracks.

Item Type: Article
Erschienen: 2011
Creators: Glaum, Julia ; Granzow, Torsten ; Schmitt, Ljubomira Ana ; Kleebe, Hans-Joachim ; Rödel, Jürgen
Title: Temperature and driving field dependence of fatigue processes in PZT bulk ceramics
Language: English
Abstract:

The temperature- and field-dependent degradation properties of bulk Pb(Zr,Ti)O3 material (PZT) under a unipolar electric field were investigated. Unipolar cycling leads to the build-up of an internal bias field based on the agglomeration of charges at grain boundaries. A simple model was developed which describes the general dynamics of unipolar fatigue and its dependence on temperature and driving field. Comparing the large and small signal permittivity before and after fatigue led to the conclusion that domain walls became clamped by the agglomerated charges. This clamping effect could be visualized by transmission electron microscopy (TEM). Additionally, the TEM investigations revealed that unipolar fatigue leads to a weakening of the microstructure and to the development of microcracks.

Journal or Publication Title: Acta Materialia
Journal volume: 59
Number: 15
Uncontrolled Keywords: Ferroelectricity, Perovskites, Transmission electron microscopy, Electroceramics, Piezoelectricity
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Earth Science
11 Department of Materials and Earth Sciences > Earth Science > Geo-Material-Science
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Nonmetallic-Inorganic Materials
DFG-Collaborative Research Centres (incl. Transregio)
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres
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 B3: Structure Characterization of Piezoelectric Ceramics With Respect to Electrical Fatigue
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > D - Component properties
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
Date Deposited: 08 Aug 2011 14:31
DOI: 10.1016/j.actamat.2011.06.017
Additional Information:

SFB 595 Cooperation B3, D1

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