ISIS Neutron and Muon Source Data Journal

Low-energy dynamics and emergent excitations in the cubic NTE material Cd(CN)2

Abstract: Cadmium cyanide is a negative thermal expansion material: it shrinks – rather than expands – when heated. We are proposing to carry out an inelastic neutron scattering experiment on the MARI spectrometer. This experiment will allow us to work out exactly how the structure of cadmium cyanide responds to temperature. We are trying to answer the question: when the material is heated, how do its atoms vibrate? Answering this will allow us to work out the mechanism responsible for its negative thermal expansion effect. This question might have been asked (and answered) many years ago, were it not for the fact that cadmium absorbs neutrons incredibly strongly. What's changed is that we now have access to a sample made from a single isotope of cadmium that is actually a good neutron scatterer, rather than a good neutron absorber.

Principal Investigator: Professor Andrew Goodwin
Experimenter: Dr Anthony Phillips
Experimenter: Dr Chloe Coates
Experimenter: Mr Johnathan Bulled
Local Contact: Dr Helen Walker
Experimenter: Dr Arianna Minelli

DOI: 10.5286/ISIS.E.RB1920076

ISIS Experiment Number: RB1920076

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 Andrew Goodwin et al; (2019): Low-energy dynamics and emergent excitations in the cubic NTE material Cd(CN)2, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1920076

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