ISIS Neutron and Muon Source Data Journal

Guest dynamics as a function of pressure in a barocaloric coordination framework

Abstract: Coordination framework materials tend to be mechanically soft, so their order-disorder phase transitions can be exploited, for instance, in environmentally friendly barocaloric refrigeration. Yet understanding the origin of the entropy change across these phase transitions is exceptionally challenging. QENS provides a unique way to simplify this problem by separating entropy due to dynamic site-hopping from that due to vibration or static disorder. In this experiment we will load a coordination framework, TPrAMn(dca)3, with exceptionally high barocaloric coefficient into a new TAV6 pressure cell on OSIRIS and selectively measure the dynamics of the guest tetrapropylammonium ion as a function of applied pressure. Our results will elucidate the origin of this material's functionality and help towards designing new barocaloric frameworks that display still greater barocaloric effects.

Principal Investigator: Dr Anthony Phillips
Experimenter: Mr Guanqun Cai
Local Contact: Dr Franz Demmel
Experimenter: Dr Helen Walker
Experimenter: Miss Bernet Meijer
Experimenter: Dr Richard Dixey

DOI: 10.5286/ISIS.E.RB2010449

ISIS Experiment Number: RB2010449

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 Anthony Phillips et al; (2020): Guest dynamics as a function of pressure in a barocaloric coordination framework, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2010449

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