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.
Competing polar and antipolar modes as a function of pressure in Li2SrNb2O7
Abstract: Ferroelectric materials possess a permanent electric dipole, the direction of which can be switched through the application of an external electric field, and as such are widely used in electronic devices like infrared sensors. The existence of a permanent electric dipole can often be linked directly to a symmetry-breaking structural distortion, such as the relative movement of oxide and titanium ions in the prototypical ferroelectric BaTiO3, that imbalances the charge distribution in the structure. Such structural distortions also occur in the layered Ruddlesden-Popper phases, A3B2O7, where they can lead to complex behaviours such as hybrid-improper-ferroelectricity, or competing ferroelectric distortions in the different layers. Li2SrNb2O7 has a so-called ?pseudo-Ruddlesden-Popper? structure and has been shown to have a complicated combination of ferro- and anti-ferroelectric properties. Through chemical doping, the system Li2Sr1?xCax(Nb1?xTax)2O7 shows a complex phase diagram and we look to investigate the effect of physical (rather than chemical) pressure on the 'parent' phase (Li2SrNb2O7) of this intriguing material family.
Principal Investigator: Dr Alexandra Gibbs
Experimenter: Dr Andreas Rost
Experimenter: Mr Ben Gade
Experimenter: Dr Alexander Browne
Local Contact: Dr Craig Bull
Experimenter: Mr Ashley Brennan
DOI: 10.5286/ISIS.E.RB2310721
ISIS Experiment Number: RB2310721
| Part DOI | Instrument | Public release date | Download Link |
|---|---|---|---|
| 10.5286/ISIS.E.RB2310721-1 | PEARL | 09 March 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],
[doi]
For Example:
Dr Alexandra Gibbs et al; (2024): Competing polar and antipolar modes as a function of pressure in Li2SrNb2O7, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2310721
Data is released under the CC-BY-4.0 license.
