ISIS Neutron and Muon Source Data Journal

Influence of substitution in a skymion-hosting van der Waals magnet

Abstract: The van der Waals magnet Fe3GaTe2 is of particular current interest due to the presence of ferromagnetism above room temperatures (T > 350 K), and reports of skyrmionic excitations close to the transition. Moreover, the tunability of the magnetism in the FeyXTe2 (X = Ge, Ga) family through chemical substitution has been documented, and shows additional promise for realizing new properties. Here we propose muon measurements on the (Fe1?xCox)3GaTe2 (x = 0.2, 0.5) series to observe the impact of Co substitution on the magnetism. This has been suggested to drive the system from a ferromagnet, to an antiferromagnet (x=0.2), and then to a spin glass (x=0.5). Our focus here is on the low-energy dynamics of the system, since these are responsible for skyrmion formation in the x=0 material.

Principal Investigator: Professor Tom Lancaster
Experimenter: Dr Matthew Pearce
Experimenter: Mr Alexey Kiselyk
Experimenter: Dr Francis Pratt
Local Contact: Dr Mark Telling
Experimenter: Dr Daniel Mayoh
Experimenter: Professor Stephen Blundell
Experimenter: Mr Nathan Bentley
Experimenter: Professor Geetha Balakrishnan
Experimenter: Mr Theo Breeze

DOI: 10.5286/ISIS.E.RB2510320

ISIS Experiment Number: RB2510320

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:
Professor Tom Lancaster et al; (2026): Influence of substitution in a skymion-hosting van der Waals magnet, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2510320

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