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FM: Fachverband Funktionsmaterialien
FM 11: Poster Session Functional Materials
FM 11.2: Poster
Dienstag, 10. März 2026, 18:00–20:30, P4
An Atom Probe Tomography Study of the Bond Breaking Behavior of Transition Metal Chalogenides — •Sophia Schreinemacher1, Jan Köttgen1, Elias Hildebrnad1, Felix Hoff1, Christian Stenz1, Vicky Hasse3, Yuan Yu1, and Matthias Wuttig1,2 — 1I. Institute of Physics (IA), RWTH Aachen University, Germany — 2Peter Grünberg Institute - JARA-Institute Energy Efficient Information Technology (PGI-10), Jülich, Germany — 3Max Planck Institute for Chemical Physics of Solids 01187 Dresden, Germany
Chemical bonds are a vital subject in materials science, as they are one of the central factors that define the properties of a material. Transition metal chalcogenides are a group of materials characterized by the bonding between the chalcogenide p-orbitals and the metal d-orbitals, which exhibit unique electronic, optical, and magnetic properties. The main bonding indicator in this study is the probability of multiple events (PME) obtained during atom probe tomography (APT) acquisition.
The results show a medium PME (40-60%), highlighting the unique bond-breaking behavior that transition metal chalcogenides display during APT evaporation. In a plot of the PME against the electrical conductivity, the studied materials cluster at the border between the metavalent and covalent materials. These findings expose a clear connection between transition metal chalcogenides, their d- and p-orbital interaction, and their bonding characteristics, thereby broadening our understanding of metavalent materials.
Keywords: APT; Transition Metal Chalcogenides; Metavalent bonding