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Point-group sensitive orientation mapping using EBSD

: Winkelmann, A.; Nolze, G.; Himmerlich, M.; Lebedev, V.; Reichmann, A.


Holm, E.A. ; The Minerals, Metals and Materials Society -TMS-, Warrendale/Pa.:
6th International Conference on Recrystallization and Grain Growth, ReX&GG 2016. Proceedings : Held July 17-21, 2016, Omni William Penn Hotel, Pittsburgh, Pennsylvania, USA
Cham: Springer International Publishing, 2016 (Chemistry and materials science. Professional)
ISBN: 978-3-319-48626-0 (Print)
ISBN: 978-3-319-48770-0 (Online)
ISBN: 978-1-119-32835-3
International Conference on Recrystallization and Grain Growth (ReX & GG) <6, 2016, Pittsburgh/Pa.>
Fraunhofer IAF ()

We demonstrate polarity-sensitive orientation mapping of non-centrosymmetric phases by Electron Backscatter Diffraction (EBSD) [1,2]. The method overcomes the restrictions of kinematic orientation determination by EBSD, which is limited to the centrosymmetric Laue-groups connected with Friedel's rule. Different cubic and hexagonal materials (GaN, ZnO) are tested in a quantitative pattern matching approach based on simulations using the dynamical theory of electron diffraction. This procedure results in a distinct assignment of the local orientation in complex materials according to the non-centrosymmetric point group of the crystal structure.