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Local structure of Pb(Zr0.53Ti0.47)O3
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Baba-Kishi, K. Z. and Glazer, A. M. (Anthony Michael) (2014) Local structure of Pb(Zr0.53Ti0.47)O3. Journal of Applied Crystallography, Volume 47 (Number 5). pp. 1688-1698. doi:10.1107/S1600576714019086 ISSN 0021-8898.
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Official URL: http://dx.doi.org/10.1107/S1600576714019086
Abstract
High-angle annular dark-field (HAADF) and annular bright-field (ABF) images recorded from the Pb(ZrxTi1-x)O3 morphotropic phase boundary (PZTmpb) show B-site displacements along the <110> directions and prominent distortions in the oxygen cages surrounding both the B sites and the Pb environments. The measured range of B-site displacements is about 0.25-0.4 Å. Oxygen cage distortions appear to be variable in shape and dimensions at the unit-cell level. Comparison of the observed displacements with the structural projections based on the established monoclinic space group Cm (Cs3) shows a good overall agreement. A qualitative match between Cm (Cs3) and the reported observations is inconclusive because of inaccuracy in the measurements, originating from imprecise identification of atomic column centres inherent in the HAADF and ABF images. In most of the observed cases, B-site displacements in HAADF images, and oxygen cage distortions in ABF images, appear pronounced compared with the structural projections in Cm (Cs3). Columnar chemical inhomogeneity has been commonly observed in both B-site and Pb columns in PZTmpb. Weak <110> diffuse streaking along the [001], [110] and [111] zone axes has been imaged, suggestive of correlation with the systematic ion disorder along <110>.
Item Type: | Journal Article | ||||
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
Journal or Publication Title: | Journal of Applied Crystallography | ||||
Publisher: | Wiley-Blackwell Publishing Ltd. | ||||
ISSN: | 0021-8898 | ||||
Official Date: | October 2014 | ||||
Dates: |
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Volume: | Volume 47 | ||||
Number: | Number 5 | ||||
Page Range: | pp. 1688-1698 | ||||
DOI: | 10.1107/S1600576714019086 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access |
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