ISIS Neutron and Muon Source Data Journal

Crystal Field Excitations and Effective Pseudospin in SrCoP2O7

Abstract: SrCoP2O7 is a magnetic material in which the Co2+ ions have an unusual local environment. However, the magnetic energy levels associated with these ions have not yet been measured. We propose powder inelastic neutron-scattering measurements on 8 g of SrCoP2O7 using MAPS. Measurements at 5 and 150 K with incident energies of 60 and 180 meV will resolve the lowest crystal-field and spin-orbit excitations, survey the higher-energy manifold, and distinguish magnetic modes from phonons through their momentum-transfer and temperature dependence. Comparison with related cobalt oxyanion compounds, particularly CaCoV2O7 , will reveal how the unusual square-pyramidal coordination modifies the Co2+ level scheme. The results will provide the microscopic basis for modelling the low-temperature magnetism of SrCoP2O7 and guide future investigations of its magnetic excitations.

Principal Investigator: Dr Guratinder Kaur
Experimenter: Dr Masahiko Isobe
Experimenter: Dr Harry Lane
Experimenter: Miss Josie Ball
Experimenter: Miss Athira K P
Local Contact: Dr Travis Williams

DOI: 10.5286/ISIS.E.RB2600065

ISIS Experiment Number: RB2600065

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 Guratinder Kaur et al; (2026): Crystal Field Excitations and Effective Pseudospin in SrCoP2O7, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2600065

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