ISIS Neutron and Muon Source Data Journal

Phase behaviour and dielectric phenomena in bismuth niobate energy storage materials

Abstract: Bismuth niobate (BiNbO4) is widely used in multilayer RF and microwave components such as capacitors and chip layer capacitors. This compound exhibits two main structural forms (polymorphs) alpha and beta. Both alpha and beta phases are potential antiferroelectric (AFE) materials which may be used for energy storage. The alpha polymorph shows interesting dielectric properties with transitions to ferroelectric and paraelectric phases. We propose to study details of these dielectric phase transitions, with a view to understanding the nature of these very subtle transitions. Further heating BiNbO4 results in the appearance of two previously unknown polymorphs in this system, gamma above 1024C and delta above 1070C. We propose to analyse the structures of these two polymorphs with a view to establishing their relationship with the lower temperature alpha and beta phases.

Principal Investigator: Dr Isaac Abrahams
Experimenter: Dr Hangfeng Zhang
Experimenter: Ms Chuying Yu
Experimenter: Dr Haixue Yan
Experimenter: Dr Mike Reece

DOI: 10.5286/ISIS.E.RB1510218

ISIS Experiment Number: RB1510218

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 Isaac Abrahams et al; (2015): Phase behaviour and dielectric phenomena in bismuth niobate energy storage materials, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1510218

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