Using EBSD and TEM-Kikuchi patterns to study local crystallography at the domain boundaries of lead zirconate titanate

Farooq, M.U., Villarrutia, R., MacLaren, I. , Kungl, H., Hoffmann, M.J., Fundenberger, J.-J. and Bouzy, E. (2008) Using EBSD and TEM-Kikuchi patterns to study local crystallography at the domain boundaries of lead zirconate titanate. Journal of Microscopy, 230(3), pp. 445-454. (doi:10.1111/j.1365-2818.2008.02004.x)

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Publisher's URL: http://dx.doi.org/10.1111/j.1365-2818.2008.02004.x

Abstract

Reliable EBSD mapping of 90° domains in a tetragonal ferroelectric perovskite has been achieved for the first time, together with reliable automated orientation determination from TEM-Kikuchi patterns. This has been used to determine misorientation angles at 90° domain boundaries and thus local <i>c</i>/<i>a</i> ratios. The sources of orientation noise/error and their effects on the misorientation angle data have been thoroughly analyzed and it is found that this gives a cosine distribution of misorientation angles about the mean with a characteristic width related to the width of the orientation noise distribution. In most cases, a good agreement is found between local <i>c</i>/<i>a</i> ratios and global measurements by X-ray diffraction, but some clear discrepancies have also been found suggesting that real local variations are present, perhaps as a consequence of compositional inhomogeneities.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:MacLaren, Dr Ian
Authors: Farooq, M.U., Villarrutia, R., MacLaren, I., Kungl, H., Hoffmann, M.J., Fundenberger, J.-J., and Bouzy, E.
Subjects:Q Science > QC Physics
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Journal of Microscopy
Publisher:Wiley
ISSN:0022-2720
ISSN (Online):1365-2818
Published Online:28 June 2008
Copyright Holders:Copyright © 2008 Blackwell
First Published:First published in Journal of Microscopy 230(3):445-454
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher.

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
411471Using crystallographic orientation mapping to examine stress concentrations and local crystallography in piezoelectric materialsIan MacLarenEngineering & Physical Sciences Research Council (EPSRC)EP/D032768/1Physics and Astronomy