ISIS Neutron and Muon Source Data Journal

Evolution of magnetic structure in Fe4O5

Abstract: High pressure can stabilize crystal structures unthinkable at ambient conditions with novel and unusual physical properties. The high-pressure research on the Fe-O system during the last decade revealed a whole new family of iron oxides with unusual stoichiometry like Fe4O5, Fe5O6, Fe7O9, etc. They belong to the same homologous series and are comprised of two principal building blocks, the two-dimensional slabs of iron octahedra separated by one-dimensional chains of iron ions coordinated by trigonal prisms. In our recent work, we developed a unified crystallographic approach to this series of iron oxides. Based on this approach we were able to demonstrate that magnetic interactions in the one- dimensional chains have symmetry protection against perturbations from surroundings and that these oxides can adopt either ferromagnetic or antiferromagnetic ground state depending on the width of the octahedral slabs in the structure. In this proposal, we intend to experimentally test these crystallographic conjectures using powder neutron diffraction on the WISH instrument to determine the evolution of magnetic structure in Fe4O5.

Principal Investigator: Dr Denis Vasiukov
Experimenter: Professor Elizabeth Blackburn
Local Contact: Dr Dmitry Khalyavin
Experimenter: Dr Sean Injac
Experimenter: Mr Oskar Stepan?i?

DOI: 10.5286/ISIS.E.RB2420453

ISIS Experiment Number: RB2420453

Publisher: STFC ISIS Neutron and Muon Source

Data format: RAW/Nexus
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Data Citation

The recommended format for citing this dataset in a research publication is as:
[author], [date], [title], [publisher], [doi]

For Example:
Dr Denis Vasiukov et al; (2024): Evolution of magnetic structure in Fe4O5, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2420453

Data is released under the CC-BY-4.0 license.