ISIS Neutron and Muon Source Data Journal
This is a page describing data taken during an experiment at the ISIS Neutron and Muon Source. Information about the ISIS Neutron and Muon Source can be found at https://www.isis.stfc.ac.uk.
Inelastic Neutron Scattering study of magnetic excitations in Triple Perovskites Ba3TRuIrO9 (T=Mg, Na and Zn)
Abstract: 6H-perovskites with formula Ba3MAAŽO9, which form in triple perovskite P63/mmc structure, display interesting magnetic properties on account of large spin-orbit coupling because of the shorter A-AŽ distance in this structure. Ba3MgRuIrO9 and Ba3NaRuIrO9 with mixed 4d (Ru) and 5d (Ir) moments present an interesting magnetic behavior with competing localized and itinerant magnetism. The magnetic susceptibility measurements show a magnetic transition of complex nature in Ba3MgRuIrO9 near 17 K arising from the localized nature of Ir/Ru magnetic moments with an average valence state of 5, whereas the localized Ir/Ru leads to a magnetic phase transition near 88 K in Ba3NaRuIrO9 with an average valence state of 5.5. The magnetic measurements on both the compounds show the presence of short-range ferromagnetic and long-range antiferromagnetic correlations. Further investigations using the neutron scattering measurements are compulsory to understand the localized Ir/Ru magnetism in Ba3MgRuIrO9 and Ba3NaRuIrO9. We have perfomed MARI express (RB2490265) on Ba3TRuIrO9 (T=Mg and Na) and we see magnetic excitations near 5 meV at 5K. We therefore propose to carry out a detail inelastic neutron scattering experiment to probe the magnetic excitations in these compounds. We propose to carry inelastic neutron scattering measurements on Ba3MgRuIrO9 and Ba3NaRuIrO9 using the MARI spectrometer. We will also measure Ba3ZnRuIrO9 for comparison, which orders ferromagnetically below 70 K.
Principal Investigator: Dr Uthayakumar Sivaperumal
Experimenter: Dr Vivek Kumar Anand
Experimenter: Dr Mohamed Aouane
Local Contact: Dr Devashi Adroja
DOI: 10.5286/ISIS.E.RB2510741
ISIS Experiment Number: RB2510741
| Part DOI | Instrument | Public release date | Download Link |
|---|---|---|---|
| 10.5286/ISIS.E.RB2510741-1 | MARI | 26 March 2028 | Download |
Publisher: STFC ISIS Neutron and Muon Source
Data format: RAW/Nexus
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Data Citation
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publication is as:
[author], [date], [title], [publisher],
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For Example:
Dr Uthayakumar Sivaperumal et al; (2025): Inelastic Neutron Scattering study of magnetic excitations in Triple Perovskites Ba3TRuIrO9 (T=Mg, Na and Zn), STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2510741
Data is released under the CC-BY-4.0 license.
