ISIS Neutron and Muon Source Data Journal

Neutron scattering study on the structure of the supersolid state candidate EuCo1.8Fe0.2Al9

Abstract: With the growing constraints of helium-based refrigeration, frustrated quantum magnets have emerged as a transformative platform for sub-Kelvin cooling. The magnetocaloric effect, linked to spin supersolidity, shows promise for advanced cooling technologies. Here, we propose EuCo1.8Fe0.2Al9, a metallic high-spin antiferromagnet, to be a spin-supersolid candidate. It exhibits an apparent 1/3 magnetization plateau when the field is applied along the c axis. Given that field-induced plateau transitions are characteristic of supersolidity, elucidating the evolution of magnetic structure with the applied magnetic field is of paramount importance. We propose to study the detailed structure information in EuCo1.8Fe0.2Al9, which will allow us to comprehensively map out how the magnetic structure evolves with both temperature and applied magnetic field, providing a deeper understanding of the underlying physics.

Principal Investigator: Dr Mingfang Shu
Experimenter: Dr Zhilun Lu
Local Contact: Dr Dmitry Khalyavin
Experimenter: Dr Wei Xu
Experimenter: Dr Jie Ma

DOI: 10.5286/ISIS.E.RB2610532

ISIS Experiment Number: RB2610532

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 Mingfang Shu et al; (2026): Neutron scattering study on the structure of the supersolid state candidate EuCo1.8Fe0.2Al9, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2610532

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