ISIS Neutron and Muon Source Data Journal

Cation reorientation dynamics in a metal formate perovskite

Abstract: Hybrid metal-organic perovskites are promising functional materials, but the complex interactions between organic cations and the framework surrounding them are difficult to model. We have recently proposed, on the basis of total neutron scattering data, that in the high-temperature phase of dimethylammonium manganese formate, the disordered (CH3)2NH2+ ion jumps between more orientations than are apparent from traditional crystallographic models. We propose here to test our new model by probing the quasi-elastic neutron scattering from the cation rotation. Analysis of the elastic incoherent structure factor as a function of temperature will enable us to confirm the number of rotational orientations available to the cation and measure the activation energy for hopping between them. The results will be relevant to the design of new framework materials with targeted dielectric properties.

Principal Investigator: Dr Anthony Phillips
Experimenter: Miss Manting QIU
Experimenter: Miss Ling Wang
Experimenter: Miss Jiaxun Liu
Experimenter: Miss Lei Tan
Experimenter: Mr Mark Wilkinson
Local Contact: Dr Franz Demmel
Experimenter: Professor Martin Dove

DOI: 10.5286/ISIS.E.RB1620278

ISIS Experiment Number: RB1620278

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; (2016): Cation reorientation dynamics in a metal formate perovskite, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1620278

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