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.
Mapping charge and spin phase evolution in Ln0.5Ba0.5FeO3
Abstract: The title compositions are of interest as they contained mixed and unusually high valent Fe3.5+ and can be prepared as both A-site layer-ordered double perovskites LnBaFe2O6 and A-disordered Ln0.5Ba0.5FeO3 perovskite polymorphs. The A-site layer-ordered double perovskites LnBaFe2O6 were found to show complicated and successive charge and magnetic transitions using WISH data. Here we propose to study the recently synthesised new A-cation disordered perovskite polymorphs Ln0.5Ba0.5FeO3 (Ln = La, Pr, Nd). These show charge disproportion and magnetic ordering transitions near 200 K. To reveal the nature of the transitions and compare properties with the A-site ordered LnBaFe2O6 polymorphs, we propose temperature dependent neutron diffraction experiments at the WISH diffractometer to clarify the charge and spin orders. Samples are small (0.3 g from ozonolysis reactions) so the total counting time is ~13 hours per sample. The expected results will help us understand the effect of A-site order-disorder in tuning the charge, spin and lattice degrees of freedom in this notable transition-metal oxide system.
Principal Investigator: Professor Paul Attfield
Experimenter: Dr Masato Goto
Experimenter: Dr Kunlang Ji
Local Contact: Dr Pascal Manuel
Experimenter: Dr Sean Injac
Experimenter: Dr Yuichi Shimakawa
Experimenter: Ms Karolina Wojcik
Experimenter: Mr Shilin Xu
Experimenter: Mr Shaoyuan Zhang
DOI: 10.5286/ISIS.E.RB2610411
ISIS Experiment Number: RB2610411
| Part DOI | Instrument | Public release date | Download Link |
|---|---|---|---|
| 10.5286/ISIS.E.RB2610411-1 | WISH | 28 September 2029 | Download |
Publisher: STFC ISIS Neutron and Muon Source
Data format: RAW/Nexus
Select the data format above to find
out more about it.
Data Citation
The recommended format for citing this dataset in a research
publication is as:
[author], [date], [title], [publisher],
[doi]
For Example:
Professor Paul Attfield et al; (2026): Mapping charge and spin phase evolution in Ln0.5Ba0.5FeO3, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2610411
Data is released under the CC-BY-4.0 license.
