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. 2020 May 26;26(30):6773-6777.
doi: 10.1002/chem.202000719. Epub 2020 May 12.

Exchange-Biasing in a Dinuclear Dysprosium(III) Single-Molecule Magnet with a Large Energy Barrier for Magnetisation Reversal

Tian Han  1 , Marcus J Giansiracusa  2 , Zi-Han Li  1 , You-Song Ding  1   2 , Nicholas F Chilton  2 , Richard E P Winpenny  2 , Yan-Zhen Zheng  1
Affiliations

Exchange-Biasing in a Dinuclear Dysprosium(III) Single-Molecule Magnet with a Large Energy Barrier for Magnetisation Reversal

Tian Han et al. Chemistry. .

Abstract

A dichlorido-bridged dinuclear dysprosium(III) single-molecule magnet [Dy2 L2 (μ-Cl)2 (thf)2 ] has been made by using a diamine-bis(phenolate) ligand, H2 L. Magnetic studies show an energy barrier for magnetisation reversal (Ueff ) 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.

Keywords: dinuclear compounds; dysprosium; exchange interactions; hysteresis loop; single-molecule magnets.

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References

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