ISIS Neutron and Muon Source Data Journal

Antiferroelectric Tetragonal Tungsten Bronzes

Abstract: Recently the presence of two phase transitions on heating in K2(La0.75Pr0.25)Nb5O15 has been observed and have been assigned to successive ferro- (FE) to antiferro- (AFE) to para-electric (PE) transformations. This composition is of particular interest as the room temperature AFE phase results in a high and voltage stable permittivity (and hence capacitance) under large applied electric fields. As a result these materials can be utilised in high capacitance, high voltage multi-layer capacitors (MLCs). We aim to determine the underlying crystallographic changes associated with the FE-AFE transition, and also an in-situ study of MLCs fabricated from this material under an applied electric field. These studies will give us an atom-scale insight into the origin of the properties of this materials allowing development of further materials for application as high voltage capacitors.

Principal Investigator: Professor Finlay Morrison
Experimenter: Mr Tomoki Murata
Experimenter: Dr Sakyo Hirose
Local Contact: Dr Alexandra Gibbs

DOI: 10.5286/ISIS.E.RB2010533

ISIS Experiment Number: RB2010533

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 Finlay Morrison et al; (2020): Antiferroelectric Tetragonal Tungsten Bronzes, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2010533

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