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.
investigation of high-energy Sm3+ crystal-field excitations and potential Kramers-Driven 3d-4f complex spin dynamics in canted ferrochromite SmFe0.5Cr0.5O3
Abstract: We propose a high-energy inelastic neutron scattering (INS) study of SmFe0.5Cr0.5O3 (SFCO) over 5 300 K using the MAPS TOF spectrometer to map the Sm3+ crystal-field (CF) excitations and higher CF/ potential hybridized 3d-4f excitations. Half-doped Rare-earth ferrochromites (RFe0.5Cr0.5O3) with B-site cation disorder leads to competing exchange pathways Fe3+/Cr3+ - O Fe3+/Cr3+, while localized R3+ moments contribute to crystal-field effects resulting in complex spin dynamics. Magnetization investigations on phase-pure SFCO reveal canted antiferromagnetic order near 270 K, and a broad SR regime at 120 200 K, with corresponding dielectric anomalies, suggesting the magneto-dielectric coupling. The reversibility of FCC-FCW cycles down to the 10 K temperature, hints towards (Gz, Fx) and/or (Gx, Fz) spin configurations. Importantly, heat capacity measurements show a Schottky anomaly, and its field-induced modification indicates discrete Sm3+ CF levels. Therefore, to capture the low- to high energy Sm3+ CF-excitations and to extract the 3d-4f exchange, we will perform INS measurements from 20 - 500 meV utilizing a hollow concentric Aluminium cylinder to minimize neutron absorption effects. These measurements will directly provide microscopic understanding of complex spin dynamics and role of Kramers ion nature in 3d-4f coupling.
Principal Investigator: Dr Vivek Malik
Experimenter: Mr Mohit Madaan
Local Contact: Dr Travis Williams
Experimenter: Dr Anil Jain
Local Contact: Dr George Wood
DOI: 10.5286/ISIS.E.RB2610508
ISIS Experiment Number: RB2610508
| Part DOI | Instrument | Public release date | Download Link |
|---|---|---|---|
| 10.5286/ISIS.E.RB2610508-1 | MAPS | 28 March 2029 | Download |
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 Vivek Malik et al; (2026): investigation of high-energy Sm3+ crystal-field excitations and potential Kramers-Driven 3d-4f complex spin dynamics in canted ferrochromite SmFe0.5Cr0.5O3, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2610508
Data is released under the CC-BY-4.0 license.
