1. Hysteresis in a bimetallic holmium complex: A synergy between electronic and nuclear magnetic interactions.
- Author
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Viciano-Chumillas, Marta, Koprowiak, Florian, Mutikainen, Ilpo, Wernsdorfer, Wolfgang, Mallah, Talal, and Bolvin, Hélène
- Subjects
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HYSTERESIS , *LAMINATED metals , *HOLMIUM compounds , *NUCLEAR magnetic resonance , *X-ray crystallography , *MAGNETIC moments - Abstract
We report a bimetallic holmium(III) complex showing a S-shaped magnetic hysteresis at low temperature. The complex is investigated by x-ray crystallography, magnetometry, single crystal microsquid measurements, and first-principles calculations. A model Hamiltonian including electronic and nuclear magnetic moments is used to fit all experimental data. We conclude that the Ho(III) may be described as non-Kramers doublets with respective gaps of ΔA=0.8 and ΔB=10 cm-1 and that there is a small ferromagnetic coupling of J=1 cm-1 (ˆHS=-JSA⋅SB). As in previous works, the hysteresis arise from the hyperfine structure of the Ho(III) ions. The S-shaped form of the hysteresis reflects the avoided crossing of the electronic states in the non-Kramers doublets. [ABSTRACT FROM AUTHOR]
- Published
- 2017
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