ISIS Neutron and Muon Source Data Journal

Determination of the relative magnitudes of static and dynamic displacements in High Entropy Alloys

Abstract: The width of a peak in a pair distribution function (PDF) provides a measure of the variation in the distance between a pair of atoms. This results from a combination of thermal vibrations and static displacements - the latter being a key concept when investigating structure-property relationships. We propose to probe the relative magnitudes of the two effects through analysis of the PDF of a High Entropy Alloy (HEA - a multicomponent alloy which reportedly exhibits anomalously large static displacements) at several temperatures. At low temperature the thermal vibrations will be minimised, allowing a truer estimation of the magnitude of static disorder. Through comparison with equivalent data obtained from simpler alloys we aim to determine the true level of local strain in an HEA - a result which may challenge one of the core concepts of HEA research.

Principal Investigator: Dr Helen Playford
Experimenter: Dr Lewis Owen
Experimenter: Professor Nick Jones
Experimenter: Professor Howard Stone

DOI: 10.5286/ISIS.E.RB1620375

ISIS Experiment Number: RB1620375

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 Helen Playford et al; (2016): Determination of the relative magnitudes of static and dynamic displacements in High Entropy Alloys, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1620375

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