ISIS Neutron and Muon Source Data Journal

Spontaneous strain and framework distortion in hybrid Prussian blue analogues

Abstract: The metal-organic Prussian blue analogues (HIm)2K[M(CN)6], where HIm is the imidazolium cation and M = Fe or Co, have switchable dielectric constants, since the imidazolium ions are free to rotate in their planes at high T but freeze into a single orientation at low T. Both materials exhibit an intermediate-T phase isosymmetric to the high-T phase; the nature of this phase is not obvious, but analysis of the spontaneous strain associated with both phase transitions suggests important differences between the Fe and Co compounds related to the differences in cation size. However, this analysis is based on few measurements of limited precision. We propose here an HRPD study in order to measure the spontaneous strain at many temperature points and to high precision, to resolve the differences between these materials and direct future work on electrically functional framework materials.

Principal Investigator: Dr Anthony Phillips
Experimenter: Mr Mark Wilkinson
Local Contact: Dr Dominic Fortes
Experimenter: Professor Martin Dove
Experimenter: Dr Helen Duncan

DOI: 10.5286/ISIS.E.RB1710400

ISIS Experiment Number: RB1710400

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; (2017): Spontaneous strain and framework distortion in hybrid Prussian blue analogues, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1710400

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