TU Darmstadt / ULB / TUbiblio

Influence of lanthanum doping on the morphotropic phase boundary of lead zirconate titanate

Hinterstein, Manuel and Schönau, Kristin A. and Kling, Jens and Fuess, Hartmut and Knapp, Michael and Kungl, Hans and Hoffmann, Michael J. (2010):
Influence of lanthanum doping on the morphotropic phase boundary of lead zirconate titanate.
In: Journal of Applied Physics, pp. 024110-1, 108, (2), ISSN 00218979, [Online-Edition: http://dx.doi.org/10.1063/1.3437399],
[Article]

Abstract

A phase diagram for morphotropic (Pb0.985La0.01)(Zr1−xTix)O3 is proposed based on a combination of X-ray and neutron powder diffraction experiments and complemented by transmission electron microscopy. Dependent on composition three regions are characterized. The stability range of tetragonal microdomains for high Ti contents, the stability range of rhombohedral microdomains for low Ti contents, and an intermediate stability range of nanodomains. All three regions exhibit a corresponding low temperature configuration. Temperature dependent diffraction revealed that lanthanum doping reduces the sensitivity of the structure to changes in temperature and composition. A continuous transition from pseudorhombohedral to tetragonal symmetry with an intermediate two-phase region at the morphotropic phase boundary is observed. A similar transition of low temperature superstructure phases from pseudorhombohedral to pseudotetragonal with an intermediate monoclinic phase governed by a continuous change in the oxygen octahedral tilt system from a−a−a− over a−a−c− to a0a0c− is identified.

Item Type: Article
Erschienen: 2010
Creators: Hinterstein, Manuel and Schönau, Kristin A. and Kling, Jens and Fuess, Hartmut and Knapp, Michael and Kungl, Hans and Hoffmann, Michael J.
Title: Influence of lanthanum doping on the morphotropic phase boundary of lead zirconate titanate
Language: English
Abstract:

A phase diagram for morphotropic (Pb0.985La0.01)(Zr1−xTix)O3 is proposed based on a combination of X-ray and neutron powder diffraction experiments and complemented by transmission electron microscopy. Dependent on composition three regions are characterized. The stability range of tetragonal microdomains for high Ti contents, the stability range of rhombohedral microdomains for low Ti contents, and an intermediate stability range of nanodomains. All three regions exhibit a corresponding low temperature configuration. Temperature dependent diffraction revealed that lanthanum doping reduces the sensitivity of the structure to changes in temperature and composition. A continuous transition from pseudorhombohedral to tetragonal symmetry with an intermediate two-phase region at the morphotropic phase boundary is observed. A similar transition of low temperature superstructure phases from pseudorhombohedral to pseudotetragonal with an intermediate monoclinic phase governed by a continuous change in the oxygen octahedral tilt system from a−a−a− over a−a−c− to a0a0c− is identified.

Journal or Publication Title: Journal of Applied Physics
Volume: 108
Number: 2
Uncontrolled Keywords: crystal symmetry, doping, lanthanum compounds, lead compounds, phase diagrams, titanium compounds, transmission electron microscopy, X-ray diffraction, zirconium compounds
Divisions: 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 > 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
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > A - Synthesis
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres
DFG-Collaborative Research Centres (incl. Transregio)
Date Deposited: 10 Aug 2011 11:28
Official URL: http://dx.doi.org/10.1063/1.3437399
Additional Information:

SFB 595 Cooperation A2, B3

Identification Number: doi:10.1063/1.3437399
Export:

Optionen (nur für Redakteure)

View Item View Item