ISIS Neutron and Muon Source Data Journal

Magnetic excitation in a triangular lattice frustrated magnet NdMgAl11O19

Abstract: Recently, powder samples of hexaaluminates REMgAl11O19 (RE = Pr, Nd) that have an ideal 2D triangular lattice of real earth ions have been synthesized. The evidence of significant antiferromagnetic interactions makes them a platform to investigate quantum spins on a triangular lattice. Nd3+ with Jeff =1/2 Kramer?s doublet ground state has been studied in many pyrochlore compounds but very few Nd-based triangular lattices. Therefore, it would interesting to study the magnetic properties of NdMgAl11O19, which has Nd3+ (4f3 4I9/2) ions and a perfect triangular lattice. It has less disorder than other triangular lattice QSL candidates like YbMgGaO4 and NaYbSe2. Our recent INS experiment on the isostructural CeMgAl11O19 shows a continuum of excitation around 0.1 meV at 0 field and spin waves around 1 meV under 4 T fields along the c-axis. A comparative INS experiment on NdMgAl11O19 could provide unique insights into the possibility of QSL physics on the triangular lattices.

Principal Investigator: Dr Bin Gao
Experimenter: Mr Weiliang Yao
Local Contact: Dr Ross Stewart
Experimenter: Dr Chunruo Duan

DOI: 10.5286/ISIS.E.RB2410234

ISIS Experiment Number: RB2410234

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 Bin Gao et al; (2025): Magnetic excitation in a triangular lattice frustrated magnet NdMgAl11O19, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2410234

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