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Pressure dependence of the exchange interaction in the dimeric single-molecule magnet [Mn4O3Cl4(O2CEt)3(py)3]2 from inelastic neutron scattering

A. Sieber·D. Foguet-Albiol·O. Waldmann·S. T. Ochsenbein·G. Carver·H. Mutka·F. Fernandez-Alonso·M. Mezouar·H. P. Weber·G. Christou·H. U. Güdel
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Abstract

The low-lying magnetic excitations in the dimer of single-molecule magnets (Mn4)2 are studied by inelastic neutron scattering as a function of hydrostatic pressure. The anisotropy parameters D and B04, which describe each Mn4 subunit, are essentially pressure independent, while the antiferromagnetic exchange coupling J between the two Mn4 subunits strongly depends on pressure, with an increase of 42% at 17 kbar. Additional pressure dependent powder X-ray measurements allow a structural interpretation of the findings.

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A. Sieber, D. Foguet-Albiol, O. Waldmann, S. T. Ochsenbein, G. Carver, H. Mutka, F. Fernandez-Alonso, M. Mezouar, H. P. Weber, G. Christou, H. U. Güdel. 2006-06-12. Pressure dependence of the exchange interaction in the dimeric single-molecule magnet [Mn4O3Cl4(O2CEt)3(py)3]2 from inelastic neutron scattering. https://doi.org/10.1103/physrevb.74.024405

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