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Updated: Jul 13, 2026

Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
Published on: June 9, 2023
Metal-ligand interplay in strongly correlated oxides: a parametrized phase diagram for pressure-induced spin
Aleksi Mattila1, Jean-Pascal Rueff, James Badro
1Division of X-Ray Physics, Department of Physical Sciences, POB 64, 00014 University of Helsinki, Finland.
Abstract:
We investigate the magnetic properties of archetypal transition-metal oxides MnO, FeO, CoO, and NiO under very high pressure by x-ray emission spectroscopy at the Kbeta line. We observe a strong modification of the magnetism in the megabar range in all the samples except NiO. The results are analyzed within a multiplet approach including charge-transfer effects. The spectral changes are well accounted for by changes of the ligand field acting on the d electrons and allows us to extract the d-hybridization strength, O-2p bandwidth and ionic crystal field across the magnetic transition. This approach allows first-hand insight into the mechanism of the pressure-induced spin transition.
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