Radiation effects, zero thermal expansion, and pressure-induced phase transition in CsMnCo(CN)6

Hanna L. B. Boström; Andrew B. Cairns; Muzi Chen; Dominik Daisenberger; Christopher J. Ridley; Nicholas P. Funnell

doi:10.1039/D2CP03754H

Radiation effects, zero thermal expansion, and pressure-induced phase transition in CsMnCo(CN)₆†

Hanna L. B. Boström,

*^a Andrew B. Cairns,

^bc Muzi Chen,^bc Dominik Daisenberger,^d Christopher J. Ridley

^e and Nicholas P. Funnell

Author affiliations

* Corresponding authors

^a Max Planck Institute for Solid State Research, Heisenbergstraße 1, Stuttgart, Germany
E-mail: h.bostroem@fkf.mpg.de

^b Department of Materials, Imperial College London, Royal School of Mines, Exhibition Road, London, UK

^c London Centre for Nanotechnology, Imperial College London, London, UK

^d Diamond Light Source Ltd., Harwell Campus, Didcot, UK

^e ISIS Neutron and Muon Source, Rutherford Appleton Laboratory, Harwell Campus, Didcot, UK

Abstract

The Prussian blue analogue CsMnCo(CN)₆ is studied using powder X-ray and neutron diffraction under variable temperature, pressure, and X-ray exposure. It retains cubic F [4 with combining macron] 3m symmetry in the range 85–500 K with minimal thermal expansion, whereas a phase transition to Pn2 occurs at ∼2 GPa, driven by octahedral tilting. A small lattice contraction occurs upon increased X-ray dose. Comparisons with related systems indicate that the Cs^I ions decrease the thermal expansion and suppress the likelihood of phase transformations. The results improve the understanding of the stimuli-responsive behaviour of coordination polymers.

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Article information

DOI: https://doi.org/10.1039/D2CP03754H
Article type: Communication
Submitted: 15 Aug 2022
Accepted: 06 Oct 2022
First published: 06 Oct 2022
This article is Open Access

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Phys. Chem. Chem. Phys., 2022,24, 25072-25076

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Radiation effects, zero thermal expansion, and pressure-induced phase transition in CsMnCo(CN)₆

H. L. B. Boström, A. B. Cairns, M. Chen, D. Daisenberger, C. J. Ridley and N. P. Funnell, Phys. Chem. Chem. Phys., 2022, 24, 25072 DOI: 10.1039/D2CP03754H

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