Dictionary Indexing of Electron Back-Scatter Diffraction Patterns: a Hands-On Tutorial

Dictionary indexing of electron back-scatter patterns was recently proposed as an alternative to the commercially available indexing packages. In this tutorial paper, we describe in detail the various steps that need to be taken to successfully complete an indexing run on an arbitrary data set. We provide three toy data sets for the reader to experiment with: poly-crystalline nickel with several different acquisition conditions, orthorhombic forsterite, and a single slice from a large serial sectioning experiment on a Ni-based superalloy. The data files and all files produced by the indexing routine are made available as Supplementary Material (https://doi.org/10.1184/R1/7792505).

[1]  David C. Joy,et al.  Monte Carlo Modeling for Electron Microscopy and Microanalysis , 1995 .

[2]  M. Groeber,et al.  An Automated Multi-Modal Serial Sectioning System for Characterization of Grain-Scale Microstructures in Engineering Materials , 2012 .

[3]  M. Graef,et al.  Orientation sampling for dictionary-based diffraction pattern indexing methods , 2016 .

[4]  George W. Fitzmaurice,et al.  Same Stats, Different Graphs: Generating Datasets with Varied Appearance and Identical Statistics through Simulated Annealing , 2017, CHI.

[5]  A. Deal,et al.  Energy-filtered electron backscatter diffraction. , 2008, Ultramicroscopy.

[6]  Marc De Graef,et al.  Energy-weighted dynamical scattering simulations of electron diffraction modalities in the scanning electron microscope. , 2018, Ultramicroscopy.

[7]  Marc De Graef,et al.  Dictionary Indexing of Electron Channeling Patterns , 2017, Microscopy and Microanalysis.

[8]  Lianmao Peng,et al.  Debye–Waller Factors and Absorptive Scattering Factors of Elemental Crystals , 1996 .

[9]  V. Schomaker,et al.  Enstatite, Mg2Si206: A neutron diffraction refinement of the crystal structure and a rigid-body analysis of the thermal vibration , 1986 .

[10]  Marc De Graef,et al.  Error analysis of the crystal orientations obtained by the dictionary approach to EBSD indexing. , 2017, Ultramicroscopy.

[11]  T. B. Britton,et al.  Constraints on the effective electron energy spectrum in backscatter Kikuchi diffraction , 2018, Physical Review B.

[12]  K. Marquardt,et al.  Quantitative electron backscatter diffraction (EBSD) data analyses using the dictionary indexing (DI) approach: Overcoming indexing difficulties on geological materials , 2017 .

[13]  D. Abou‐Ras,et al.  Unambiguous Determination of Local Orientations of Polycrystalline CuInSe2 Thin Films via Dictionary‐Based Indexing , 2019, physica status solidi (RRL) – Rapid Research Letters.

[14]  A. Kirkland,et al.  Direct detection of electron backscatter diffraction patterns. , 2013, Physical review letters.

[15]  J. E. Chisholm,et al.  International Tables for Crystallography, Vol. A: Space-group Symmetry , 1984, Mineralogical Magazine.

[16]  T. Hahn,et al.  International Tables for Crystallography: Volume A: Space-Group Symmetry , 1987 .

[17]  M. De Graef,et al.  Merging Monte Carlo and Dynamical EBSD Simulations , 2013, Microscopy and Microanalysis.

[18]  V. Schomaker,et al.  Enstatite, Mg2Si2O6: A neutron diffraction refinement of the crystal structure and a rigid-body analysis of the thermal vibration , 1986 .

[19]  P. Withers,et al.  High resolution low kV EBSD of heavily deformed and nanocrystalline Aluminium by dictionary-based indexing , 2018, Scientific Reports.

[20]  E. Dickey,et al.  Mapping 180° polar domains using electron backscatter diffraction and dynamical scattering simulations. , 2017, Ultramicroscopy.

[21]  V. O’Shea,et al.  Digital direct electron imaging of energy-filtered electron backscatter diffraction patterns , 2015 .

[22]  Matthew M Nowell,et al.  Introduction and comparison of new EBSD post-processing methodologies. , 2015, Ultramicroscopy.

[23]  Marc De Graef,et al.  Dynamical Electron Backscatter Diffraction Patterns. Part I: Pattern Simulations , 2013, Microscopy and Microanalysis.

[24]  Pierre Villars,et al.  Pearson's handbook of crystallographic data for intermetallic phases , 1985 .

[25]  M. De Graef,et al.  Modeling dynamical electron scattering with Bethe potentials and the scattering matrix. , 2016, Ultramicroscopy.

[26]  M. Graef,et al.  Energy dependence of the spatial distribution of inelastically scattered electrons in backscatter electron diffraction , 2018 .

[27]  R. Hazen,et al.  The crystal structures of forsterite and hortonolite at several temperatures up to 900°C , 1973 .

[28]  D. Rosca New uniform grids on the sphere , 2010 .

[29]  G. Nolze Image distortions in SEM and their influences on EBSD measurements. , 2007, Ultramicroscopy.