Multiscale Reciprocal Space Mapping of Magnetite Mesocrystals

Mesocrystals are a class of nanostructured material, where a multiple‐length‐scale structure is a prerequisite of many interesting phenomena. Resolving the mesocrystal structure is quite challenging due to their structuration on different length scales. The combination of small‐ and wide‐angle X‐ray...

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Bibliographic Details
Published in:Advanced materials (Weinheim) 2023-01, Vol.35 (2), p.e2207130-n/a
Main Authors: Chumakova, Aleksandra, Steegemans, Tristan, Baburin, Igor A., Mistonov, Alexander, Dubitskiy, Ilya S., Schlotheuber, Julian, Kirner, Felizitas, Sturm, Sebastian, Lubk, Axel, Müller‐Caspary, Knut, Wimmer, Ilona, Fonin, Mikhail, Sturm, Elena V., Bosak, Alexeï
Format: Article
Language:English
Subjects:
Magnetic properties
Magnetite
Materials science
mesocrystals
microscopic structure
multiple‐length‐scale structures
Nanostructured materials
Scattering
supercrystallography
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Summary:Mesocrystals are a class of nanostructured material, where a multiple‐length‐scale structure is a prerequisite of many interesting phenomena. Resolving the mesocrystal structure is quite challenging due to their structuration on different length scales. The combination of small‐ and wide‐angle X‐ray scattering (SAXS and WAXS) techniques offers the possibility of non‐destructively probing mesocrystalline structures simultaneously, over multiple length scales to reveal their microscopic structure. This work describes how high dynamical range of modern detectors sheds light on the weak features of scattering, significantly increasing the information content. The detailed analysis of X‐ray diffraction (XRD) from the magnetite mesocrystals with different particle sizes and shapes is described, in tandem with electron microscopy. The revealed features provide valuable input to the models of mesocrystal growth and the choice of structural motif; the impact on magnetic properties is discussed. Mesocrystals are a class of nanostructured material, where a multiple‐length‐scale structure is a prerequisite of many interesting phenomena. A detailed analysis of X‐ray diffraction from magnetite mesocrystals with different particle sizes and shapes—in tandem with electron microscopy—is given. The revealed features provide valuable input to the models of mesocrystal growth.
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.202207130