ISIS Neutron and Muon Source Data Journal

Determination of magnetic ground state in the trimer based mixed valent hexagonal perovskite ruthenate Ba4NbRu3O12 using powder neutron diffraction

Abstract: The trimer based 12L-hexagonal quadrupole perovskites Ba4MM?3O12(M=di, tri, tetra, and pentavalent cation; M?=heavy transition metal Ru, Rh, and Ir) serve as a potential avenue for various intriguing magnetic ground states due to a delicate balance between spin-orbit coupling (SOC) of 4d/5d transition metals, crystal field splitting, intra & inter-trimer magnetic exchange interactions, and geometric frustration. Ba4NbRu3O12 has recently been reported to be a geometrically frustrated Mott insulator, showing apparent quantum spin liquid like signature in both the high-field dc magnetization and heat capacity data, as well as T-linear contribution to the magnetic specific heat at very low-T. However, appearance of a ZFC and FC peak around 4 K in the 100 Oe susceptibility data, and a ZFC/FC irreversibility together with a broad hump-like anomaly in the magnetic specific heat in the 7-10 K temperature range, indicate a possible magnetic ordering. To shed light on the ground state of this material, we are going to undertake neutron powder diffraction measurements using the high-resolution cold neutron diffractometer WISH

Principal Investigator: Dr Abhisek Bandyopadhyay
Local Contact: Dr Dmitry Khalyavin
Experimenter: Dr Devashi Adroja
Experimenter: Dr Masahiko Isobe
Experimenter: Dr Arvind Kumar Yogi
Experimenter: Ms Isha Isha

DOI: 10.5286/ISIS.E.RB2320348

ISIS Experiment Number: RB2320348

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 Abhisek Bandyopadhyay et al; (2024): Determination of magnetic ground state in the trimer based mixed valent hexagonal perovskite ruthenate Ba4NbRu3O12 using powder neutron diffraction, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2320348

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