Introduction to the special issue on electron crystallography.

Structure analysis of microand nanocrystalline materials has witnessed immense progress in the last decade thanks to the development of electron diffraction techniques. The automation of data collection, development of new data collection modes and improvements in the data treatment have allowed unprecedented progress in most aspects of crystallography dealing with very small crystals. Probably the most notable change of paradigm is observable in the structure determination of unknown phases by electron diffraction. Three-dimensional diffraction techniques now allow almost routine solution and refinement of structures from single crystals as small as a few tens of nanometres, providing access to hitherto unsolvable crystal structures or to previously unattainable level of structural detail. Scanning diffraction techniques allow phase and orientation mapping with nanometre resolution and even three-dimensional reconstruction of phase and orientation distributions. This special issue features a collection of original contributions covering a broad range of aspects of electron crystallography. An interested reader will find papers describing the foundations and methodological basis of structure solution by electron diffraction (Eggeman, 2019; Kolb et al., 2019; Gemmi & Lanza, 2019), theoretical and methodological advances in data processing (Rauch & Véron, 2019; Palatinus et al., 2019; Latychevskaia & Abrahams, 2019), discussion of applications of electron diffraction outside the realm of perfectly periodic crystals (Gorelik et al., 2019; Mugnaioli & Gorelik, 2019) as well as specific case studies showing the application of the methods to hot topics in current crystallography (Wang et al., 2019; Hadermann & Abakumov, 2019). The collection of contributions in this special issue showcases the diversity of applications of current electron diffraction techniques, demonstrates the state of the development of the technique and also features work that further advances the electron diffraction methods. We believe that this special issue can serve as a starting point for anybody interested in electron crystallography and we are convinced that the contributions in this issue will become reference points for future research in this exciting field.

• Publication year

  2019

• Venue

  Acta Crystallographica. Section B: Structural Science, Crystal Engineering and Materials

• Publication date

  2019-08-01

• Fields of study

  Chemistry, Medicine, Materials Science, Physics

• Identifiers
  DOI 10.1107/S2052520619010783PMID 32830703
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar, PubMed

• No claims are published for this paper.

• No concepts are published for this paper.

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• Scanning transmission electron diffraction methods.

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• Structure analysis of materials at the order-disorder borderline using three-dimensional electron diffraction.

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• Towards quantitative treatment of electron pair distribution function.

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• Structure solution and refinement of metal-ion battery cathode materials using electron diffraction tomography.

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• Specifics of the data processing of precession electron diffraction tomography data and their implementation in the program PETS2.0.

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• Methods for orientation and phase identification of nano-sized embedded secondary phase particles by 4D scanning precession electron diffraction.

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