Topic
Electron backscatter diffraction
About: Electron backscatter diffraction is a research topic. Over the lifetime, 15184 publications have been published within this topic receiving 317847 citations. The topic is also known as: EBSD.
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TL;DR: The method is demonstrated by application to determination of the structure of the Au144(SCH2CH2Ph)60 cluster by using rapid, time-resolved nanobeam electron diffraction combined with high-angle annular dark field scanning/transmission electron microscopy images in a probe corrected STEM microscope, operated at reduced voltages.
Abstract: Determination of the total structure of molecular nanocrystals is an outstanding experimental challenge that has been met, in only a few cases, by single-crystal X-ray diffraction. Described here is an alternative approach that is of most general applicability and does not require the fabrication of a single crystal. The method is based on rapid, time-resolved nanobeam electron diffraction (NBD) combined with high-angle annular dark field scanning/transmission electron microscopy (HAADF-STEM) images in a probe corrected STEM microscope, operated at reduced voltages. The results are compared with theoretical simulations of images and diffraction patterns obtained from atomistic structural models derived through first-principles density functional theory (DFT) calculations. The method is demonstrated by application to determination of the structure of the Au144(SCH2CH2Ph)60 cluster.
114 citations
TL;DR: In this paper, the authors explored the active mechanism during deformation of fibrous quartz fibres and determined the complete crystallographic orientation of individual recrystallized grains and subgrains using a combination of CIP (computerintegrated polarization microscopy), EBSD (electron back-scatter diffraction), and additional specially developed image analysis techniques.
114 citations
TL;DR: In this article, a superstructure for this material with space group P3 1 12, and a √3a h e x. × √ 3a h er e x, ordering in the transition metal layers is proposed, indicating the presence of long-range interactions between different transition-metal layers.
Abstract: A combination of experimental techniques that probe different relevant length scales is necessary to truly understand the structure of complex solids. In LiNi 0 . 5 Mn 0 . 5 O 2 electron diffraction reveals the presence of long-range ordering, previously undetected with X-ray diffraction and neutron diffraction. We propose a superstructure for this material with space group P3 1 12, and a √3a h e x . × √3a h e x . ordering in the transition metal layers. Surprisingly, these ordered layers are stacked in abcabc sequence along the c axis, indicating the presence of long-range interactions between different transition-metal layers. Electron diffraction evidence indicates that Li, Ni, and Mn ions are not distributed randomly in the transition-metal layers, but order and form two sublattices with significantly different occupation. We further demonstrate that this ordering would be extremely difficult to detect experimentally, if not impossible, with powder diffraction by X-rays and neutrons.
114 citations
TL;DR: In this article, a general theory of electron diffraction by crystals is developed, where the crystals are assumed to be infinitely extended in two dimensions and finite in the third dimension, and the scattering problem by this structure two-dimensionalally expanded forms of GREEN'S function and integral equation are at first derived, and combined in single three-dimensional forms.
Abstract: A general theory of electron diffraction by crystals is developed. The crystals are assumed to be infinitely extended in two dimensions and finite in the third dimension. For the scattering problem by this structure two-dimensionally expanded forms of GREEN’S function and integral equation are at first derived, and combined in single three-dimensional forms. EWALD’S method is applied to sum up the series for GREEN’S function.
114 citations
113 citations