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Ferroelectric domains in PZT ceramics at the morphotropic phase boundary. Can the splitting of reflections in SAED patterns be used for the distinction of different pseudo-cubic phases?

Schierholz, Roland and Fuess, Hartmut (2012):
Ferroelectric domains in PZT ceramics at the morphotropic phase boundary. Can the splitting of reflections in SAED patterns be used for the distinction of different pseudo-cubic phases?
In: Journal of Applied Crystallography, pp. 766-777, 45, (4), ISSN 0021-8898,
[Online-Edition: http://dx.doi.org/10.1107/S0021889812022583],
[Article]

Abstract

Tetragonal, rhombohedral and monoclinic ferroelectric domains can all occur in morphotropic PbZr1-xTixO3 (PZT) ceramics. In this article, the influence of these domains on the splitting of reflections in selected area electron diffraction (SAED) patterns along the main pseudo-cubic zone axes is reported. The orientation of the domain wall in a transmission electron microscopy image with respect to the splitting of reflections in the diffraction pattern has to be considered for the interpretation. The distinction of tetragonal and rhombohedral splitting is achieved for a pronounced splitting except for <111> with the domain wall edge on. As the monoclinic structure contains tetragonal as well as rhombohedral distortions, the distinction of monoclinic symmetry from tetragonal and rhombohedral based only on the splitting of reflections is not possible. Conceivable models of configurations of monoclinic subdomains inside the existing tetragonal or rhombohedral microdomains are derived from group-subgroup relations. Some experimental observations are given, which can only be explained by these models.

Item Type: Article
Erschienen: 2012
Creators: Schierholz, Roland and Fuess, Hartmut
Title: Ferroelectric domains in PZT ceramics at the morphotropic phase boundary. Can the splitting of reflections in SAED patterns be used for the distinction of different pseudo-cubic phases?
Language: English
Abstract:

Tetragonal, rhombohedral and monoclinic ferroelectric domains can all occur in morphotropic PbZr1-xTixO3 (PZT) ceramics. In this article, the influence of these domains on the splitting of reflections in selected area electron diffraction (SAED) patterns along the main pseudo-cubic zone axes is reported. The orientation of the domain wall in a transmission electron microscopy image with respect to the splitting of reflections in the diffraction pattern has to be considered for the interpretation. The distinction of tetragonal and rhombohedral splitting is achieved for a pronounced splitting except for <111> with the domain wall edge on. As the monoclinic structure contains tetragonal as well as rhombohedral distortions, the distinction of monoclinic symmetry from tetragonal and rhombohedral based only on the splitting of reflections is not possible. Conceivable models of configurations of monoclinic subdomains inside the existing tetragonal or rhombohedral microdomains are derived from group-subgroup relations. Some experimental observations are given, which can only be explained by these models.

Journal or Publication Title: Journal of Applied Crystallography
Volume: 45
Number: 4
Uncontrolled Keywords: ferroelectric domains; PZT ceramics; morphotropic phase boundaries; selected area electron diffraction.
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Structure Research
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
11 Department of Materials and Earth Sciences > Material Science
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
11 Department of Materials and Earth Sciences
Zentrale Einrichtungen
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres
DFG-Collaborative Research Centres (incl. Transregio)
Date Deposited: 31 Aug 2012 12:30
Official URL: http://dx.doi.org/10.1107/S0021889812022583
Additional Information:

SFB 595 B3

Identification Number: doi:10.1107/S0021889812022583
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