A {CrIII2DyIII2} Single-Molecule Magnet: Enhancing the Blocking Temperature through 3d Magnetic Exchange

Butterfly magnet: The replacement of diamagnetic CoIII for CrIII in a 3d‐4f butterfly complex results in vastly improved single‐molecule magnet properties. Longer relaxation times are found, with magnetic hysteresis observed. This is due to exchange interactions between the DyIII and CrIII ions, res...

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Bibliographic Details
Published in:Angewandte Chemie International Edition 2013-11, Vol.52 (46), p.12014-12019
Main Authors: Langley, Stuart K., Wielechowski, Daniel P., Vieru, Veacheslav, Chilton, Nicholas F., Moubaraki, Boujemaa, Abrahams, Brendan F., Chibotaru, Liviu F., Murray, Keith S.
Format: Article
Language:English
Subjects:
ab initio calculations
Blocking
Butterflies
chromium
dysprosium
Exchange
heterometallic cluster compounds
Hysteresis
Ion exchangers
Magnetic properties
Magnetization
Multilevel
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Summary:Butterfly magnet: The replacement of diamagnetic CoIII for CrIII in a 3d‐4f butterfly complex results in vastly improved single‐molecule magnet properties. Longer relaxation times are found, with magnetic hysteresis observed. This is due to exchange interactions between the DyIII and CrIII ions, resulting in a multilevel exchange barrier with significantly reduced quantum tunneling of the magnetization.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201306329