ISIS Neutron and Muon Source Data Journal

Unveiling molecular and collective magnetism in the coupled trimer spin system Ba4NbMn3O12

Abstract: When isolated spin clusters are weakly coupled to each other, zero-dimensional quantum and three-dimensional collective magnetism concomitantly occur. This is envisioned in the low-lying magnetic excitations, including transverse and longitudinal magnon modes. The newly discovered hexagonal perovskite Ba4NbMn3O12 constitutes Mn3O12 trimers made of three face-sharing MnO6 octahedra, with the trimers arranged in triangular planes. Each Mn3O12 trimer is corner-shared with the non-magnetic NbO6 octahedra, thereby leading to weak intertrimer interactions through the Mn-O-O-Mn super-super-exchange paths. In addition, adBa4NbMn3O12 shows a ferromagnetic type order at 42K, yet with a small negative Curie-Weiss temperature of -4K. This energy hierarchy renders Ba4NbMn3O12 an attracting platform to explore a crossover of molecular magnetism to more collective behavior.

Principal Investigator: Professor KwangYong Choi
Experimenter: Dr Suheon Lee
Experimenter: Dr Jhuma Sannigrahi
Local Contact: Dr Devashi Adroja

DOI: 10.5286/ISIS.E.RB1910230

ISIS Experiment Number: RB1910230

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 KwangYong Choi et al; (2019): Unveiling molecular and collective magnetism in the coupled trimer spin system Ba4NbMn3O12, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1910230

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