Direct measurement of dysprosium(III)˙˙˙dysprosium(III) interactions in a single-molecule magnet

Eufemio Moreno Pineda, Nicholas F. Chilton, Raphael Marx, María Dörfel, Daniel O. Sells, Petr Neugebauer, Shang-Da Jiang, David Collison, Joris van Slageren, Eric J.L. McInnes () and Richard E.P. Winpenny ()
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Eufemio Moreno Pineda: School of Chemistry and Photon Science Institute, The University of Manchester
Nicholas F. Chilton: School of Chemistry and Photon Science Institute, The University of Manchester
Raphael Marx: Institut für Physikalische Chemie, Universität Stuttgart
María Dörfel: Institut für Physikalische Chemie, Universität Stuttgart
Daniel O. Sells: School of Chemistry and Photon Science Institute, The University of Manchester
Petr Neugebauer: Institut für Physikalische Chemie, Universität Stuttgart
Shang-Da Jiang: 1. Physikalisches Institut, Universität Stuttgart
David Collison: School of Chemistry and Photon Science Institute, The University of Manchester
Joris van Slageren: Institut für Physikalische Chemie, Universität Stuttgart
Eric J.L. McInnes: School of Chemistry and Photon Science Institute, The University of Manchester
Richard E.P. Winpenny: School of Chemistry and Photon Science Institute, The University of Manchester

Nature Communications, 2014, vol. 5, issue 1, 1-7

Abstract: Abstract Lanthanide compounds show much higher energy barriers to magnetic relaxation than 3d-block compounds, and this has led to speculation that they could be used in molecular spintronic devices. Prototype molecular spin valves and molecular transistors have been reported, with remarkable experiments showing the influence of nuclear hyperfine coupling on transport properties. Modelling magnetic data measured on lanthanides is always complicated due to the strong spin–orbit coupling and subtle crystal field effects observed for the 4f-ions; this problem becomes still more challenging when interactions between lanthanide ions are also important. Such interactions have been shown to hinder and enhance magnetic relaxation in different examples, hence understanding their nature is vital. Here we are able to measure directly the interaction between two dysprosium(III) ions through multi-frequency electron paramagnetic resonance spectroscopy and other techniques, and explain how this influences the dynamic magnetic behaviour of the system.

Date: 2014
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DOI: 10.1038/ncomms6243

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