Optimization of three-dimensional electron diffuse scattering data acquisition

被引:0
|
作者
Poppe, Romy [1 ]
Hadermann, Joke [1 ]
机构
[1] Univ Antwerp, Dept Phys, Groenenborgerlaan 171, B-2020 Antwerp, Belgium
关键词
3D electron diffraction; Single-crystal diffuse scattering; SHORT-RANGE ORDER; AUTOMATED DIFFRACTION TOMOGRAPHY; LOCAL CRYSTAL-CHEMISTRY; SINGLE-CRYSTALS; DISORDER; PROGRAM;
D O I
10.1016/j.ultramic.2024.114023
中图分类号
TH742 [显微镜];
学科分类号
摘要
The diffraction patterns of crystalline materials with local order contain sharp Bragg reflections as well as highly structured diffuse scattering. In this study, we quantitatively show how the diffuse scattering in threedimensional electron diffraction (3D ED) data is influenced by various parameters, including the data acquisition mode, the detector type and the use of an energy filter. We found that diffuse scattering data used for quantitative analysis are preferably acquired in selected area electron diffraction (SAED) mode using a CCD and an energy filter. In this study, we also show that the diffuse scattering in 3D ED data can be obtained with a quality comparable to that from single-crystal X-ray diffraction. As electron diffraction requires much smaller crystal sizes than X-ray diffraction, this opens up the possibility to investigate the local structure of many technologically relevant materials for which no crystals large enough for single-crystal X-ray diffraction are available.
引用
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页数:10
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