title: Pattern matching approach to pseudosymmetry problems in electron backscatter diffraction.
abstract: We demonstrate an approach to overcome Kikuchi pattern misindexing problems caused by crystallographic pseudosymmetry in electron backscatter diffraction (EBSD) measurements. Based on the quantitative comparison of experimentally measured Kikuchi patterns with dynamical electron diffraction simulations, the algorithm identifies the best-fit orientation from a set of pseudosymmetric candidates. Using measurements on framboidal pyrite (FeS2) as an example, we also show the improvement of the orientation precision using this approach.
authors.affiliation: Dept 5.1, Federal Institute for Materials, Research and Testing (BAM), Unter den Eichen 87, 12205 Berlin, Germany. Electronic address: Gert.Nolze@bam.de.
authors.forename: Gert
authors.initials: G
authors.lastname: Nolze
authors.affiliation: Bruker Nano, Am Studio 2D, 12489 Berlin, Germany.
authors.forename: Aimo
authors.initials: A
authors.lastname: Winkelmann
authors.affiliation: Department of Earth, Ocean & Ecological Sciences, Herdman Building, 4 Brownlow Street, University of Liverpool, Liverpool L69 3GP, UK.
authors.forename: Alan P
authors.initials: AP
authors.lastname: Boyle
keywords: Cross-correlation; EBSD; Hough transformation; Orientation precision; Pattern simulation; Pseudosymmetry; Pyrite