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.
Crystal Field Excitations in the defect-fluorite Ho2Hf2O7
Abstract: Defining single-ion properties is essential to fully understand the physics in rare-earth pyrochlore family of compounds, especially in the vicinity of the ground state. We propose to measure the Crystalline Electric Field (CEF) excitations of Ho2Hf2O7. This compound belongs to the defect-fluorite group (Fm-3m), which exhibits inherent structural disorder. Ho2Ti2O7 is a canonical dipolar spin-ice with a doublet ground state protected by a sizable 200K gap to the first excited state. In contrast to its titanate counterpart, Ho2Hf2O7 remains strongly dynamic down to 0.5K and has a large antiferromagnetic exchange coupling. Magnetic frustration is still present in the defect-fluorite unit cell; therefore, the motivation to this proposal is to explain these changes by obtaining the CEF energy level scheme.
Principal Investigator: Mr Pedro Lucas Oliveira Silva
Local Contact: Dr Duc Le
Experimenter: Professor Rafael Freitas
DOI: 10.5286/ISIS.E.RB2510115
ISIS Experiment Number: RB2510115
| Part DOI | Instrument | Public release date | Download Link |
|---|---|---|---|
| 10.5286/ISIS.E.RB2510115-1 | MARI | 21 March 2028 | 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:
Mr Pedro Lucas Oliveira Silva et al; (2025): Crystal Field Excitations in the defect-fluorite Ho2Hf2O7, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2510115
Data is released under the CC-BY-4.0 license.
