ISIS Neutron and Muon Source Data Journal

Non-stoichiometry in (Na1/2Bi1/2)TiO3: from a Pb-free piezoelectric to fast ion conduction.

Abstract: 4 days are requested on HRPD to collect Neutron Diffraction (ND) on a carefully designed series of (Na1/2Bi1/2)TiO3-based perovskites (NBT) that exhibit a switch in electrical conduction mechanism from near band gap electronic (insulating) behaviour to high levels of oxide-ion conductivity that are comparable to the best fluorite-type solid electrolytes. This switch can be induced by low levels of Bi-nonstoichiometry in undoped NBT and the oxide ion conductivity can be enhanced by acceptor doping on the Ti sites. The purpose of the beam time is to acquire ND data from 300 to 1050 K to establish accurate crystallographic information related to the changes in polymorphism and defect chemistry of this NBT series to elucidate their structure-property relationships. This will inform future compositional studies to optimise their piezoelectric (insulating) or conducting properties.

Principal Investigator: Professor Derek Sinclair
Experimenter: Mr Patrick Wu
Local Contact: Dr Kevin Knight
Experimenter: Dr Whitney Schmidt
Local Contact: Dr Kevin Knight
Experimenter: Mr Emilio Pradal Velazquez
Experimenter: Dr Fan Yang

DOI: 10.5286/ISIS.E.RB1520288

ISIS Experiment Number: RB1520288

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 Derek Sinclair et al; (2015): Non-stoichiometry in (Na1/2Bi1/2)TiO3: from a Pb-free piezoelectric to fast ion conduction., STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1520288

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