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.
Low temperature structural changes of complex ferroelectric La2Ti2O7
Abstract: La2Ti2O7 is part of an intriguing family of layered perovskite-related materials which display an unusual type of ferroelectricity. In contrast to standard ABO3 perovskites (in which octahedral rotations alone are non-polar) the ferroelectricity in La2Ti2O7 and relatives can be driven solely by rotations and tilts of the TiO6 octahedra. However, the crystal structures of these materials are very complex and we have uncovered evidence which suggests that the currently assigned space group is incorrect. Therefore, we propose to perform a detailed structural study of La2Ti2O7 to low temperature to confirm the ambient temperature space group and characterise its structural behaviour to low temperature with the aid of symmetry mode analysis with the goal of better understanding its ferroelectricity. This will also be of importance for the wider material class which is currently under-studied.
Experimenter: Mr Ben Tragheim
Local Contact: Dr Alexandra Gibbs
DOI: 10.5286/ISIS.E.RB2010811
ISIS Experiment Number: RB2010811
| Part DOI | Instrument | Public release date | Download Link |
|---|---|---|---|
| 10.5286/ISIS.E.RB2010811-1 | HRPD | 22 February 2023 | 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:
Mr Ben Tragheim et al; (2020): Low temperature structural changes of complex ferroelectric La2Ti2O7, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2010811
Data is released under the CC-BY-4.0 license.
