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.
BiCuxMn7-xO12: Towards the half-metallic limit
Abstract: The BiCuxMn7-xO12 (BCMO) quadruple perovskite solid solutions exhibit an exceptionally rich phase diagram in temperature and Cu2+ concentration as the structure negotiates competing orbital and charge degrees of freedom, on top of a Bi3+ polar instability. For x = 2.5, BCMO is a half-metal ferrimagnet (Tc = 350 K), where double exchange produces spin-polarized itinerancy. We will study how the system evolves towards this limit from an insulating state distinguished by short range magnetic interactions and a novel re-entrant structural transition (x = 1). We propose a NPD experiment on samples x = 1.5, 2 & 2.5 in which we aim to better understand a) the re-entrant transition, b) observed low temperature magnetic phase transitions and non-monotonic evolution of the magnetic order, and c) the role of orbital, charge and lone pair degrees of freedom in stabilizing the observed states.
Experimenter: Dr Roger Johnson
Experimenter: Mr Dylan Behr
Local Contact: Dr Dmitry Khalyavin
DOI: 10.5286/ISIS.E.RB2210090
ISIS Experiment Number: RB2210090
| Part DOI | Instrument | Public release date | Download Link |
|---|---|---|---|
| 10.5286/ISIS.E.RB2210090-1 | WISH | 24 March 2025 | 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],
[doi]
For Example:
Dr Roger Johnson et al; (2022): BiCuxMn7-xO12: Towards the half-metallic limit, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2210090
Data is released under the CC-BY-4.0 license.
