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Issue 22, 2018
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Ultra-broadband EPR spectroscopy in field and frequency domains

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Electron paramagnetic resonance (EPR) is a powerful technique to investigate the electronic and magnetic properties of a wide range of materials. We present the first combined terahertz (THz) field and frequency domain electron paramagnetic resonance (HFEPR/FDMR) spectrometer designed to investigate the electronic structure and magnetic properties of molecular systems, thin films and solid state materials in a very broad frequency range of 85–1100 GHz. In this paper, we show high resolution frequency-field (Zeeman) maps (170–380 GHz by 0–15 T) recorded on two single-molecule magnets, [Mn2(saltmen)2(ReO4)2] and [Mn2(salpn)2(H2O)2](ClO4)2, which give direct access to the field-dependence of the energy level diagram. Furthermore, supression of standing waves in the described system and the sensitivity in field and frequency domain operations is evaluated and discussed.

Graphical abstract: Ultra-broadband EPR spectroscopy in field and frequency domains

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Supplementary files

Article information

03 Nov 2017
04 May 2018
First published
14 May 2018

Phys. Chem. Chem. Phys., 2018,20, 15528-15534
Article type

Ultra-broadband EPR spectroscopy in field and frequency domains

P. Neugebauer, D. Bloos, R. Marx, P. Lutz, M. Kern, D. Aguilà, J. Vaverka, O. Laguta, C. Dietrich, R. Clérac and J. van Slageren, Phys. Chem. Chem. Phys., 2018, 20, 15528
DOI: 10.1039/C7CP07443C

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