ISIS Neutron and Muon Source Data Journal

Local structure and short-range correlation in pressure-induced charge glass state of BiNiO3

Abstract: The order or disorder of electrons in condensed matter plays a crucial role in determining the physical properties of the materials. In many mixed-valence materials, a charge-ordered (CO) insulating state can be observed, which is analogues to a crystalline solid. Upon heating, this charge ordered state melts and transitions into a ?charge-liquid? (metallic) phase, often accompanied by intriguing physical phenomena and functionalities, such as the Verwey transition in Fe3O4 and colossal magnetoresistance effects in manganites like perovskite manganite La0.5Ca0.5MnO3. BiNiO3 is a unique perovskite oxide that requires high pressure high temperature to prepare and exhibits a rich phase diagram due to melting of electronic orderings that drive a large negative thermal expansion. We have recently observed a novel pressure- and temperature induced intermediate "charge glassy" state that we propose to study here, leveraging our recent high pressure PDF developments on PEARL.

Principal Investigator: Dr Mark Senn
Experimenter: Dr Anna Herlihy
Experimenter: Dr Struan Simpson
Experimenter: Dr Cameron Wilson
Experimenter: Dr Anna Herlihy
Experimenter: Mr Jia-Xiang Hsu
Local Contact: Dr Nicholas Funnell
Experimenter: Dr Wei-tin Chen
Experimenter: Ms EN PEI LIU
Experimenter: Miss Elizabeth Arnold

DOI: 10.5286/ISIS.E.RB2520153

ISIS Experiment Number: RB2520153

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 Mark Senn et al; (2026): Local structure and short-range correlation in pressure-induced charge glass state of BiNiO3, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2520153

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