Elucidating structural order and disorder phenomena in mullite-type Al4B2O9 by automated electron diffraction tomography

Beitrag in einer Fachzeitschrift
(Originalarbeit)


Details zur Publikation

Autorinnen und Autoren: Zhao H, Krysiak Y, Hoffmann K, Barton B, Molina-Luna L, Neder R, Kleebe HJ, Gesing TM, Schneider H, Fischer RX, Kolb U
Zeitschrift: Journal of Solid State Chemistry
Verlag: Academic Press Inc.
Jahr der Veröffentlichung: 2017
Band: 249
Seitenbereich: 114-123
ISSN: 0022-4596
eISSN: 1095-726X


Abstract


The crystal structure and disorder phenomena of AlBO, an aluminum borate from the mullite-type family, were studied using automated diffraction tomography (ADT), a recently established method for collection and analysis of electron diffraction data. AlBO, prepared by sol-gel approach, crystallizes in the monoclinic space group C2/m. The ab initio structure determination based on three-dimensional electron diffraction data from single ordered crystals reveals that edge-connected AlO octahedra expanding along the b axis constitute the backbone. The ordered structure (A) was confirmed by TEM and HAADF-STEM images. Furthermore, disordered crystals with diffuse scattering along the b axis are observed. Analysis of the modulation pattern implies a mean superstructure (AAB) with a threefold b axis, where B corresponds to an A layer shifted by ½a and ½c. Diffraction patterns simulated for the AAB sequence including additional stacking disorder are in good agreement with experimental electron diffraction patterns.


FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Neder, Reinhard Prof. Dr.
Professur für Allgemeine Mineralogie/Kristallographie


Einrichtungen weiterer Autorinnen und Autoren

Johannes Gutenberg-Universität Mainz
Technische Universität Darmstadt
Universität Bremen


Zitierweisen

APA:
Zhao, H., Krysiak, Y., Hoffmann, K., Barton, B., Molina-Luna, L., Neder, R.,... Kolb, U. (2017). Elucidating structural order and disorder phenomena in mullite-type Al4B2O9 by automated electron diffraction tomography. Journal of Solid State Chemistry, 249, 114-123. https://dx.doi.org/10.1016/j.jssc.2017.02.023

MLA:
Zhao, Haishuang, et al. "Elucidating structural order and disorder phenomena in mullite-type Al4B2O9 by automated electron diffraction tomography." Journal of Solid State Chemistry 249 (2017): 114-123.

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Zuletzt aktualisiert 2019-25-06 um 15:48