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14–17 Mar 2022
Europe/Berlin timezone

Mullite-type materials: Introducing a new structure-type for the design of high-entropy oxides

15 Mar 2022, 14:20
20m
Talk Structural Chemistry & New crystal structures Solid State and Materials Chemistry I

Speaker

Dr Andrea Kirsch (University of Copenhagen, Department of Chemistry, Nanostructure group, Copenhagen, Denmark)

Description

High-entropy oxides (HEO) are a new class of materials containing five or more metal cations in a single-phase solid solution. For the first time, we show that high-entropy versions of mullite-type materials can be synthesized exemplarily shown in the form of 5 new compounds e.g. Bi2(AlGaFeMn)O9 and (Nd,Sm,Y,Er,Eu)2Mn4O10. The crystallized products as well as their formation are characterized by a combination of scattering, spectroscopic and microscopic techniques.

Primary author

Dr Andrea Kirsch (University of Copenhagen, Department of Chemistry, Nanostructure group, Copenhagen, Denmark)

Co-authors

Mr Niels Lefeld (Universität Bremen, , Chemische Kristallographie fester Stoffe, Bremen, Germany) Dr Jette Katja Mathiesen (University of Copenhagen, Department of Chemistry, Nanostructure group, Copenhagen, Denmark) Dr Susanne Linn Skjærvø (University of Copenhagen, Department of Chemistry, Nanostructure group, Copenhagen, Denmark) Dr Espen Drath Bøjesen (Aarhus University, Interdisciplinary Nanoscience Center, Aarhus, Denmark) Dr Denis Sheptyakov (Lab. for Neutron Scattering and Imaging, Paul Scherrer Institut, Villigen, Switzerland) Prof. Kirsten M.Ø. Jensen (University of Copenhagen, Department of Chemistry, Nanostructure group, Copenhagen, Denmark)

Presentation materials