Papers › Two-Dimensional Strain Mapping with Scanning Precession Electron Diffraction: An...
Two-Dimensional Strain Mapping with Scanning Precession Electron Diffraction: An Investigation into Data Analysis Routines
Phillip Crout, Dipanwita Chatterjee, Ingeborg Nævra Prestholdt, Tor Inge Thorsen, P. A. Midgley, Antonius T. J. van Helvoort
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Scanning precession electron diffraction (SPED) is a powerful technique for investigating strain. While extensive literature exists analysing strain under high convergence angle conditions there are few systematic studies describing work based around the use of smaller convergence angles despite this being a common set-up. We fill in some of this gap in the literature by providing a workflow for both the experimental and analysis components of such experiments. Our case study investigates strained Gallium Arsenide nanowires with a modern direct electron detector and common microscope alignments. Three peak finding routines are compared and we provide both source code and raw data to allow others to reproduce our findings.
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