ISIS Neutron and Muon Source Data Journal
This is a page describing data taken during an experiment at the ISIS Neutron and Muon Source. Information about the ISIS Neutron and Muon Source can be found at https://www.isis.stfc.ac.uk.
Powder-neutron-diffraction study of magnetic structure on frustrated Ba3MnTa2O9
Abstract: Two- dimensional (2D) triangular lattice antiferromagnets (TLAF) offer exotic magnetic phases and have attracted a lot of attention in recent times. A new Mn2+ (S=5/2) based TLAF Ba3MnTa2O9 has been synthesized in polycrystalline form using a solid-state reaction method and characterized using HRXRD, dc, and ac susceptibility and heat capacity measurements. Rietveld refinement of XRD data suggests that the material crystallizes in a trigonal crystal structure with space group P-3m1. The crystal structure comprises edge-shared triangular layers of Mn2+ ions in the crystallographic ab-plane which are well separated (7.1252 Å) along the crystallographic c-direction making it effectively a 2D TLAF. The Curie-Weiss fit of susceptibility above 100 K yields ?CW ~ -10 K, indicating a dominant antiferromagnetic interaction between Mn2+ ions. The effective magnetic moment (µeff ~ 5.8 µB) is close to the theoretical value of ~5.9 µB for isolated Mn2+ ions. A hump at ~3K in ac susceptibility (??) and heat capacity data suggest the onset of a magnetic ordering. The neutron powder diffraction technique will be useful for studying the spin structure of Ba3MnTa2O9 in the ordered state.
Principal Investigator: Dr Tusharkanti Dey
Local Contact: Dr Dmitry Khalyavin
Experimenter: Dr Sumanta Chattopadhyay
Experimenter: Mr Romario Mondal
DOI: 10.5286/ISIS.E.RB2420375
ISIS Experiment Number: RB2420375
| Part DOI | Instrument | Public release date | Download Link |
|---|---|---|---|
| 10.5286/ISIS.E.RB2420375-1 | WISH | 11 December 2027 | Download |
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],
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For Example:
Dr Tusharkanti Dey et al; (2024): Powder-neutron-diffraction study of magnetic structure on frustrated Ba3MnTa2O9, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2420375
Data is released under the CC-BY-4.0 license.
