Exchange‐Biasing in a Dinuclear Dysprosium(III) Single‐Molecule Magnet with a Large Energy Barrier for Magnetisation Reversal
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Han, Tian
Giansiracusa, Marcus J.
Li, Zi‐Han
Ding, You‐Song
Chilton, Nicholas F.
Winpenny, Richard E. P.
Zheng, Yan‐Zhen
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Abstract A dichlorido‐bridged dinuclear dysprosium(III) single‐molecule magnet [Dy 2 L 2 (μ‐Cl) 2 (thf) 2 ] has been made by using a diamine‐bis(phenolate) ligand, H 2 L. Magnetic studies show an energy barrier for magnetisation reversal ( U eff ) around 1000 K. An exchange‐biasing effect is clearly seen in magnetic hysteresis with steps up to 3 K. Ab initio calculations exclude the possibility of a pure dipolar origin of this effect leading to the conclusion that super‐exchange through the chloride bridging ligands is important.
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Chemistry - A European Journal
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