ISIS Neutron and Muon Source Data Journal
This is a page describing data taken during an experiment at the ISIS Neutron and Muon Source. Information about the ISIS Neutron and Muon Source can be found at https://www.isis.stfc.ac.uk.
Pressure-induced softening in Cu2O
Abstract: Recently, we have suggested that negative thermal expansion materials may also exhibit pressure-induced softening, where the elastic stiffness is anomalously reduced under compression. We propose to investigate whether Cu2O, a well-known NTE material, shows this effect, specifically focusing on whether B', the pressure derivative of bulk modulus, becomes negative. We expect that the value of B' in Cu2O will exhibit an interesting change from negative to positive due to its narrower NTE temperature range. Using neutron powder diffraction, we will perform measurements across different pressures and temperatures to characterize this effect. The experiment will be conducted using the normal setup Paris-Edinburgh V3 press with liquid nitrogen cooling at the PEARL diffractometer.
Public release date: 01 May 2028
Principal Investigator: Dr Zhongsheng Wei
Local Contact: Dr Craig Bull
Experimenter: Professor Martin Dove
Experimenter: Dr Nicholas Funnell
DOI: 10.5286/ISIS.E.RB2510660-1
Parent DOI: 10.5286/ISIS.E.RB2510660
ISIS Experiment Number: RB2510660
Part Number: 1
This dataset is NOT yet publicly available.
The release date is: 01 May 2028
download
the dataset
Date of Experiment: 15 March 2025
Publisher: STFC ISIS Neutron and Muon Source
Data format: RAW/Nexus
Select the data format above to find
out more about it.
Data Citation
The recommended format for citing this dataset in a research
publication is as:
[author], [date], [title], [publisher],
[doi]
For Example:
Dr Zhongsheng Wei et al; (2025): Pressure-induced softening in Cu2O, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2510660-1
Data is released under the CC-BY-4.0 license.
