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 Ground-State Magnetic Spin Structure of the Three-Dimensional Hyperhoneycomb Na2IrO3
Abstract: We propose an investigation of the ground-state magnetic spin structure of a new three-dimensional (3D) hyperhoneycomb lattice compound Na2IrO3, an analog to the two-dimensional (2D) honeycomb Kitaev spin-liquid candidates such as Li2IrO3. The Kitaev model, predicting quantum spin liquid states, has been extensively studied in 2D honeycomb materials featuring Jeff = 1/2 magnetic moments, particularly in Ir4+-based systems, but not in 3D hyperhoneycomb materials. Here, we have synthesized a new hyperhoneycomb phase of Na2IrO3. Magnetic susceptibility and specific heat measurements revealed an intrinsic antiferromagnetic-like transition at TN = 13.6 K. Notably, Na2IrO3 exhibited susceptibility behavior distinct from its structural analog Li2IrO3, suggesting a unique magnetic ground state potentially favorable for realizing a quantum spin liquid under applied magnetic fields exceeding 10 T. Due to synthesis challenges, sample sizes are limited (~300 mg), together with the large neuron absorption from Ir, it is crucial to use high-brightness neutron diffraction facilities to accurately probe the anticipated small magnetic moment (<1 ?B) and potential modulated magnetic structure. Consequently, a neutron powder diffraction experiment is necessary at the WISH instrument, leveraging its exceptional brightness, capability to cover large d-spacing regions, and low background to precisely characterize the magnetic ground state.
Principal Investigator: Mr Kantaro Murayama
Experimenter: Dr Suguru Yoshida
Experimenter: Dr Tong Zhu
Local Contact: Dr Fabio Orlandi
Experimenter: Professor Hiroshi Kageyama
DOI: 10.5286/ISIS.E.RB2520538
ISIS Experiment Number: RB2520538
| Part DOI | Instrument | Public release date | Download Link |
|---|---|---|---|
| 10.5286/ISIS.E.RB2520538-1 | WISH | 25 November 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 Kantaro Murayama et al; (2025): Investigation of Ground-State Magnetic Spin Structure of the Three-Dimensional Hyperhoneycomb Na2IrO3, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2520538
Data is released under the CC-BY-4.0 license.
