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Wide Compositional RangeIn SituElectric Field Investigations on Lead-FreeBa(Zr0.2Ti0.8)O3−x(Ba0.7Ca0.3)TiO3Piezoceramic

Zakhozheva, M. and Schmitt, Ljubomira A. and Acosta, Matias and Guo, H. and Jo, Wook and Schierholz, Roland and Kleebe, Hans-Joachim and Tan, Xiaoli (2015):
Wide Compositional RangeIn SituElectric Field Investigations on Lead-FreeBa(Zr0.2Ti0.8)O3−x(Ba0.7Ca0.3)TiO3Piezoceramic.
In: Physical Review Applied, AMER PHYSICAL SOC, pp. 064018, 3, (6), ISSN 2331-7019, [Online-Edition: http://dx.doi.org/10.1103/PhysRevApplied.3.064018],
[Article]

Abstract

The evolution of ferroelectric domains in the lead-free Ba(Zr0.2Ti0.8)O-3-x(Ba0.7Ca0.3)TiO3 (abbreviated as BZT-xBCT) piezoelectric ceramic is investigated in situ under an applied electric field using transmission electron microscopy (TEM). Poling-induced, reversible, transformation from a multidomain to a single-domain state is monitored for a large variety of compositions. For all studied materials, this transformation occurs with the appearance of an intermediate nanodomain state at moderate poling fields. According to our results, under high poling fields, a single-domain state vanishes and multiple domains reappear within the grains. Upon further cycling, switching between two different multidomain states occurs. For all BZT-xBCT compositions that we investigate, no sign of the electric-field-induced structural changes is detected using the selected area electron-diffraction (SAED) patterns, which are devoid of the reflection splitting or any detectable changes during electrical poling. The extrinsic contribution to the piezoelectric properties is found to dominate in the BZT-xBCT piezoceramic.

Item Type: Article
Erschienen: 2015
Creators: Zakhozheva, M. and Schmitt, Ljubomira A. and Acosta, Matias and Guo, H. and Jo, Wook and Schierholz, Roland and Kleebe, Hans-Joachim and Tan, Xiaoli
Title: Wide Compositional RangeIn SituElectric Field Investigations on Lead-FreeBa(Zr0.2Ti0.8)O3−x(Ba0.7Ca0.3)TiO3Piezoceramic
Language: English
Abstract:

The evolution of ferroelectric domains in the lead-free Ba(Zr0.2Ti0.8)O-3-x(Ba0.7Ca0.3)TiO3 (abbreviated as BZT-xBCT) piezoelectric ceramic is investigated in situ under an applied electric field using transmission electron microscopy (TEM). Poling-induced, reversible, transformation from a multidomain to a single-domain state is monitored for a large variety of compositions. For all studied materials, this transformation occurs with the appearance of an intermediate nanodomain state at moderate poling fields. According to our results, under high poling fields, a single-domain state vanishes and multiple domains reappear within the grains. Upon further cycling, switching between two different multidomain states occurs. For all BZT-xBCT compositions that we investigate, no sign of the electric-field-induced structural changes is detected using the selected area electron-diffraction (SAED) patterns, which are devoid of the reflection splitting or any detectable changes during electrical poling. The extrinsic contribution to the piezoelectric properties is found to dominate in the BZT-xBCT piezoceramic.

Journal or Publication Title: Physical Review Applied
Volume: 3
Number: 6
Publisher: AMER PHYSICAL SOC
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
11 Department of Materials and Earth Sciences > Material Science > Structure Research
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
DFG-Collaborative Research Centres (incl. Transregio)
Date Deposited: 29 Jun 2015 10:40
Official URL: http://dx.doi.org/10.1103/PhysRevApplied.3.064018
Identification Number: doi:10.1103/PhysRevApplied.3.064018
Funders: This work was supported by the Deutsche Forschungsgemeinschaft, Sonderforschungsbereich 595 and the ADRIA Hesse State Center for Adaptronics.
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