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Experimental measurement of stress at a four-domain junction in lead zirconate titanate

MacLaren, Ian ; Schmitt, Ljubomira A. ; Fuess, Hartmut ; Kungl, Hans ; Hoffmann, Michael J. (2005)
Experimental measurement of stress at a four-domain junction in lead zirconate titanate.
In: Journal of Applied Physics, 97 (9)
doi: 10.1063/1.1886910
Article, Bibliographie

Abstract

A junction between two lamellar bands of ferroelectric domains in a lead zirconate titanate ceramic is analyzed using Kikuchi diffraction patterns in the transmission electron microscope. Indexing of the diffraction patterns allowed the determination of the three-dimensional relative orientation of the four different domains at the junction and thus the characterization of the domain boundaries. The local c/a ratio could also be determined from the misorientations at the domain boundaries. Analysis of the data showed that large stresses were concentrated at the junction, and that this is inevitable at such band junctions. Such stress concentrations could act as nuclei for cracking of the ceramic under additional loading in service, perhaps particularly as a consequence of extended electromechanical cycling. Moreover, the stresses would increase with increasing c/a, making the issues all the more serious for Ti-rich compositions having larger c/a ratios.

Item Type: Article
Erschienen: 2005
Creators: MacLaren, Ian ; Schmitt, Ljubomira A. ; Fuess, Hartmut ; Kungl, Hans ; Hoffmann, Michael J.
Type of entry: Bibliographie
Title: Experimental measurement of stress at a four-domain junction in lead zirconate titanate
Language: English
Date: May 2005
Journal or Publication Title: Journal of Applied Physics
Volume of the journal: 97
Issue Number: 9
DOI: 10.1063/1.1886910
Abstract:

A junction between two lamellar bands of ferroelectric domains in a lead zirconate titanate ceramic is analyzed using Kikuchi diffraction patterns in the transmission electron microscope. Indexing of the diffraction patterns allowed the determination of the three-dimensional relative orientation of the four different domains at the junction and thus the characterization of the domain boundaries. The local c/a ratio could also be determined from the misorientations at the domain boundaries. Analysis of the data showed that large stresses were concentrated at the junction, and that this is inevitable at such band junctions. Such stress concentrations could act as nuclei for cracking of the ceramic under additional loading in service, perhaps particularly as a consequence of extended electromechanical cycling. Moreover, the stresses would increase with increasing c/a, making the issues all the more serious for Ti-rich compositions having larger c/a ratios.

Uncontrolled Keywords: lead compounds, ferroelectric ceramics, electric domains, domain boundaries, cracks, internal stresses, electron diffraction, transmission electron microscopy
Additional Information:

SFB 595 Cooperation A2, B3

Divisions: 11 Department of Materials and Earth Sciences
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 > A - Synthesis
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > A - Synthesis > Subproject A2: Manufacturing and characterization of PZT-ceramics with defined defect chemistry
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
Date Deposited: 27 Jul 2011 12:57
Last Modified: 20 Mar 2019 09:51
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