Plana Ruiz, Sergi (2021)
Development & Implementation of an Electron Diffraction Approach for Crystal Structure Analysis.
Technische Universität Darmstadt
doi: 10.26083/tuprints-00017609
Dissertation, Erstveröffentlichung, Verlagsversion
Kurzbeschreibung (Abstract)
The application of electron diffraction to crystallographically characterize all kinds of materials has experienced new developments that have attracted some attention in recent years. A large number of structural analyses from different compounds have been already carried out with the help of 3D electron diffraction data that were not possible with the available X-ray methods. The use of a transmission electron microscope as an electron nano-diffractometer has proved to be advantageous when diffraction data from single nanocrystals are required, for instance in phase mixtures. In this way, the individual phases do not have to be purely synthesized, which always involves the risk of structural changes. The work presented here includes the development and implementation of a novel and universal routine for the accurate and reliable acquisition of electron diffraction data. The potential of this new data collection strategy to solve various crystallographic problems is illustrated using three known materials. In addition, two unknown crystal structures from commercial products are fully determined and refined; an organic dye of low symmetry and an incommensurate modulated structure of a major constituent of cement. In particular, the precise knowledge of the different crystal structures in cement clinkers, such as the alpha'H -C2S, enables the exact phase analysis of these industrial phase mixtures directly from the manufacturing process, and paves the way for its CO2 emissions reduction.
Typ des Eintrags: | Dissertation | ||||
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Erschienen: | 2021 | ||||
Autor(en): | Plana Ruiz, Sergi | ||||
Art des Eintrags: | Erstveröffentlichung | ||||
Titel: | Development & Implementation of an Electron Diffraction Approach for Crystal Structure Analysis | ||||
Sprache: | Englisch | ||||
Referenten: | Kolb, Prof. Dr. Ute ; Estrade Albiol, Prof. Dr. Sònia | ||||
Publikationsjahr: | 2021 | ||||
Ort: | Darmstadt | ||||
Kollation: | viii, 278 Seiten | ||||
Datum der mündlichen Prüfung: | 27 Januar 2021 | ||||
DOI: | 10.26083/tuprints-00017609 | ||||
URL / URN: | https://tuprints.ulb.tu-darmstadt.de/17609 | ||||
Kurzbeschreibung (Abstract): | The application of electron diffraction to crystallographically characterize all kinds of materials has experienced new developments that have attracted some attention in recent years. A large number of structural analyses from different compounds have been already carried out with the help of 3D electron diffraction data that were not possible with the available X-ray methods. The use of a transmission electron microscope as an electron nano-diffractometer has proved to be advantageous when diffraction data from single nanocrystals are required, for instance in phase mixtures. In this way, the individual phases do not have to be purely synthesized, which always involves the risk of structural changes. The work presented here includes the development and implementation of a novel and universal routine for the accurate and reliable acquisition of electron diffraction data. The potential of this new data collection strategy to solve various crystallographic problems is illustrated using three known materials. In addition, two unknown crystal structures from commercial products are fully determined and refined; an organic dye of low symmetry and an incommensurate modulated structure of a major constituent of cement. In particular, the precise knowledge of the different crystal structures in cement clinkers, such as the alpha'H -C2S, enables the exact phase analysis of these industrial phase mixtures directly from the manufacturing process, and paves the way for its CO2 emissions reduction. |
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Status: | Verlagsversion | ||||
URN: | urn:nbn:de:tuda-tuprints-176098 | ||||
Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 500 Naturwissenschaften und Mathematik > 530 Physik 500 Naturwissenschaften und Mathematik > 540 Chemie 500 Naturwissenschaften und Mathematik > 550 Geowissenschaften |
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Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Geowissenschaften |
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Hinterlegungsdatum: | 23 Mär 2021 08:38 | ||||
Letzte Änderung: | 30 Mär 2021 06:02 | ||||
PPN: | |||||
Referenten: | Kolb, Prof. Dr. Ute ; Estrade Albiol, Prof. Dr. Sònia | ||||
Datum der mündlichen Prüfung / Verteidigung / mdl. Prüfung: | 27 Januar 2021 | ||||
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