ISIS Neutron and Muon Source Data Journal

Investigation of crystal field excitations in correlated 4f3 systems NdT2Zn20 (T = Co, Rh, and Ir)

Abstract: Recently, rare-earth-based RT2X20 (T: transition metal, X = Al, Zn and Cd) compounds have attracted much attention because of the weak crystalline electric field (CEF) effect and the enhanced hybridization effect. In the present proposal, we focus on the compounds NdT2Zn20 (T = Co, Rh, and Ir) with magnetic Gamma 6 doublets of 4f3 configuration. They exhibit antiferromagnetic orders at TN = 0.53, 0.94, and 0.65 K, respectively, for T = Co, Rh, and Ir. The electrical resistivity shows upward curvature above TN and the magnetic entropy is reduced to (0.5)Rln2 at TN, probably resulting from enhanced c-f hybridization and/or magnetic frustration in the Gamma 6 doublet of the Nd ion. To understand the observed reduction of the magnetic entropy in NdT2Zn20 through investigating the CEF level schemes, we plan to perform inelastic neutron scattering experiments with powdered samples.

Principal Investigator: Professor Takahiro Onimaru
Experimenter: Miss Rikako Yamamoto
Experimenter: Dr Devashi Adroja
Experimenter: Mr Yu Yamane
Local Contact: Dr Tatiana Guidi
Experimenter: Dr Yasuyuki Shimura
Experimenter: Dr Yuka Kusanose

DOI: 10.5286/ISIS.E.RB1920299

ISIS Experiment Number: RB1920299

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; (2019): Investigation of crystal field excitations in correlated 4f3 systems NdT2Zn20 (T = Co, Rh, and Ir), STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1920299

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