ISIS Neutron and Muon Source Data Journal

Investigation of crystal field excitations in RRh3 (R=Pr and Nd) compounds

Abstract: To determine the crystal fields of hexagonal RRh3 (R=Pr, Nd) compounds showing ferromagnetic transitions at TC=3 and 6 K, respectively, we plan to perform inelastic neutron scattering experiments with powdered samples. RRh3 crystallizes in the hexagonal CeNi3-type structure, where the R ions sit in two sites of 2d with D_3h and 4f with C_3v. In NdRh3, the magnetic entropy S_m reaches Rln2 at around TC, indicating the two-fold degeneracy of the Kramers doublet is fully released. On the other hand, S_m of PrRh3 at around TC is only 2/3 of Rln2, suggesting that magnetic order occurs only at the 4f site. Because the Pr ion is a non-Kramers ion with J=4, the ground state could be a singlet or a doublet. Moreover, even in the doublet case, only z-component of the magnetic moment is active. They possibly lead to a peculiar magnetic structure different from that of NdRh3.

Principal Investigator: Professor Takahiro Onimaru
Experimenter: Professor Toshiro Takabatake
Local Contact: Dr Duc Le
Experimenter: Dr Devashi Adroja
Experimenter: Mr Yu Yamane
Experimenter: Mr Gyeong Bae Park

DOI: 10.5286/ISIS.E.RB1710180

ISIS Experiment Number: RB1710180

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:
Professor Takahiro Onimaru et al; (2017): Investigation of crystal field excitations in RRh3 (R=Pr and Nd) compounds, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1710180

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