Speaker
Description
The straightforward synthesis of inorganic materials, especially in the nanostructured and far-from-equilibrium states, is a great challenge despite promising developments of preparation techniques [1]. The present work provides a brief overview of the mechanochemically synthesized complex oxides. The “green” aspects of mechanochemistry are clearly illustrated by selected examples, where highly defective and metastable nanostructured complex oxides with distinctive functionalities are mechanochemically synthesized in a single processing step at ambient temperature, without the need for solvents and/or calcination under controlled oxygen fugacity. Comprehensive spectroscopic techniques provide detailed complementary atomic-scale insights into the nature of the local short-range disorder of nanostructured oxides. The selected examples of both enhanced and deteriorated magnetic properties of nanoceramics prepared via mechanochemistry are presented with the focus on the clear-cut explanation of the interplay between their short-range structural disorder and magnetism. The responses of the far-from-equilibrium nanooxides to the external stimuli will also be highlighted.
Acknowledgements
The support by the Deutsche Forschungsgemeinschaft (DFG) within the project SE 1407/4 is acknowledged.
References
[1] V. Šepelák et al., “One-Step Mechanochemical Synthesis of Nanostructured and Non-Equilibrium Complex Oxides,” Encyclopedia of Green Chemistry. Elsevier, pp. 473–482, 2025. https://doi.org/10.1016/b978-0-443-15742-4.00006-5
