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

Farooq, M. U. ; Villaurrutia, R. ; MacLaren, I. ; Kungl, Hans ; Hoffmann, Michael J. ; Fundenberger, J.-J. ; Bouzy, E. :
Using EBSD and TEM-Kikuchi patterns to study local crystallography at the domain boundaries of lead zirconate titanate.
[Online-Edition: http://dx.doi.org/10.1111/j.1365-2818.2008.02004.x]
In: Journal of Microscopy, 230 (3) S. 445-454. ISSN 0022-2720
[Artikel] , (2008)
Note:

SFB 595 A2

Offizielle URL: http://dx.doi.org/10.1111/j.1365-2818.2008.02004.x

Kurzbeschreibung (Abstract)

Reliable EBSD mapping of 90 degrees 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 degrees domain boundaries and thus local c/a 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 c/a 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.

Typ des Eintrags: Artikel
Erschienen: 2008
Autor(en): Farooq, M. U. ; Villaurrutia, R. ; MacLaren, I. ; Kungl, Hans ; Hoffmann, Michael J. ; Fundenberger, J.-J. ; Bouzy, E.
Titel: Using EBSD and TEM-Kikuchi patterns to study local crystallography at the domain boundaries of lead zirconate titanate
Sprache: Englisch
Kurzbeschreibung (Abstract):

Reliable EBSD mapping of 90 degrees 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 degrees domain boundaries and thus local c/a 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 c/a 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.

Titel der Zeitschrift, Zeitung oder Schriftenreihe: Journal of Microscopy
Band: 230
(Heft-)Nummer: 3
Freie Schlagworte: domain wall; electron backscatter diffraction; ferroelectric; kikuchi pattern; lead zirconate titanate; misorientation
Fachbereich(e)/-gebiet(e): DFG-Sonderforschungsbereiche (inkl. Transregio)
DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche
Zentrale Einrichtungen
DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche > SFB 595: Elektrische Ermüdung
DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche > SFB 595: Elektrische Ermüdung > A - Synthese
DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche > SFB 595: Elektrische Ermüdung > A - Synthese > Teilprojekt A2: Herstellung und Charakterisierung von PZT-Keramiken mit definierter Defektchemie
Hinterlegungsdatum: 27 Jul 2011 11:05
Offizielle URL: http://dx.doi.org/10.1111/j.1365-2818.2008.02004.x
Zusätzliche Informationen:

SFB 595 A2

ID-Nummer: doi:10.1111/j.1365-2818.2008.02004.x
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