ISIS Neutron and Muon Source Data Journal

The ferroelectric phase transition in Dion-Jacobson layered perovskites - continuation

Abstract: Ferroelectricity in the Dion-Jacobson (DJ) family of layered perovskites arises from a 'trilinear coupling', whereby two non-polar lattice modes interact in such a way to cooperate with a 3rd, polar mode. These systems are gaining in interest as the predicted (and now observed) polariations are typically larger than those in the related families of layered perovskites. In a previous VT HRPD study (RB1520003) we carried out detaled measurements of the structural evolution of two members of this family, CsLaNb2O7 and CsBi0.6La0.4Nb2O7, at sub-ambient and above-ambient, respectively. The aim of the present proposal is to complete our analysis of this system by collecting data on the two end-member compositions CsLaNb2O7 and CsBiNb2O7 above RT, and through the ferroelectric-paraelectric transition. The results are urgently required as a comparision to a recent synchrotron study of CsLaNb2O7

Principal Investigator: Professor Philip Lightfoot
Local Contact: Dr Alexandra Gibbs
Experimenter: Dr Lucy Clark
Experimenter: Ms Charlotte Dixon
Experimenter: Dr Rebecca Clulow

DOI: 10.5286/ISIS.E.RB1620174

ISIS Experiment Number: RB1620174

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:
Professor Philip Lightfoot et al; (2016): The ferroelectric phase transition in Dion-Jacobson layered perovskites - continuation, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1620174

Data is released under the CC-BY-4.0 license.