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

Tian Han; Marcus J. Giansiracusa; Zi‐Han Li; You‐Song Ding; Nicholas F. Chilton; Richard E. P. Winpenny; Yan‐Zhen Zheng

doi:10.1002/chem.202000719

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

Tian Han, Marcus J. Giansiracusa, Zi‐Han Li, You‐Song Ding, Nicholas F. Chilton, Richard E. P. Winpenny, Yan‐Zhen Zheng^*

^*Corresponding author for this work

Research output: Contribution to journal › Commentary/debate › peer-review

Abstract

A dichlorido-bridged dinuclear dysprosium(III) single-molecule magnet [Dy₂L₂(μ-Cl)₂(thf)₂] has been made by using a diamine-bis(phenolate) ligand, H₂L. 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.

Original language	English
Pages (from-to)	6773-6777
Number of pages	5
Journal	Chemistry – A European Journal
Volume	26
Issue number	30
DOIs	https://doi.org/10.1002/chem.202000719
Publication status	Published - 1 May 2020

Keywords

dinuclear compounds
dysprosium
exchange interactions
hysteresis loop
single-molecule magnets

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@article{a6961164e9564eb5af836ba0e4a93d2c,

title = "Exchange‐Biasing in a Dinuclear Dysprosium(III) Single‐Molecule Magnet with a Large Energy Barrier for Magnetisation Reversal",

abstract = "A dichlorido-bridged dinuclear dysprosium(III) single-molecule magnet [Dy2L2(μ-Cl)2(thf)2] has been made by using a diamine-bis(phenolate) ligand, H2L. 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",

author = "Tian Han and Giansiracusa, {Marcus J.} and Zi‐Han Li and You‐Song Ding and Chilton, {Nicholas F.} and Winpenny, {Richard E. P.} and Yan‐Zhen Zheng",

year = "2020",

month = may,

day = "1",

doi = "10.1002/chem.202000719",

language = "English",

volume = "26",

pages = "6773--6777",

journal = "Chemistry – A European Journal",

issn = "0947-6539",

publisher = "John Wiley & Sons Ltd",

number = "30",

}

TY - JOUR

T1 - Exchange‐Biasing in a Dinuclear Dysprosium(III) Single‐Molecule Magnet with a Large Energy Barrier for Magnetisation Reversal

AU - Han, Tian

AU - Giansiracusa, Marcus J.

AU - Li, Zi‐Han

AU - Ding, You‐Song

AU - Chilton, Nicholas F.

AU - Winpenny, Richard E. P.

AU - Zheng, Yan‐Zhen

PY - 2020/5/1

Y1 - 2020/5/1

N2 - A dichlorido-bridged dinuclear dysprosium(III) single-molecule magnet [Dy2L2(μ-Cl)2(thf)2] has been made by using a diamine-bis(phenolate) ligand, H2L. 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.

AB - A dichlorido-bridged dinuclear dysprosium(III) single-molecule magnet [Dy2L2(μ-Cl)2(thf)2] has been made by using a diamine-bis(phenolate) ligand, H2L. 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.

KW - dinuclear compounds

KW - dysprosium

KW - exchange interactions

KW - hysteresis loop

KW - single-molecule magnets

U2 - 10.1002/chem.202000719

DO - 10.1002/chem.202000719

M3 - Commentary/debate

SN - 0947-6539

VL - 26

SP - 6773

EP - 6777

JO - Chemistry – A European Journal

JF - Chemistry – A European Journal

IS - 30

ER -

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

Abstract

Keywords

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