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Magnetic Slow Relaxation in a Metal–Organic Framework Made of Chains of Ferromagnetically Coupled Single‐Molecule Magnets
Author(s) -
Huang Gang,
FernandezGarcia Guglielmo,
Badiane Insa,
Camarra Magatte,
Freslon Stéphane,
Guillou Olivier,
Daiguebonne Carole,
Totti Federico,
Cador Olivier,
Guizouarn Thierry,
Le Guennic Boris,
Bernot Kevin
Publication year - 2018
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201800095
Subject(s) - diamagnetism , magnet , ferromagnetism , condensed matter physics , ab initio , materials science , relaxation (psychology) , chemical physics , magnetic field , chemistry , physics , psychology , social psychology , organic chemistry , quantum mechanics
We report the study of a Dy‐based metal–organic framework (MOF) with unprecedented magnetic properties. The compound is made of nine‐coordinated Dy III magnetic building blocks (MBBs) with poor intrinsic single‐molecule magnet behavior. However, the MOF architecture constrains the MBBs in a one‐dimensional structure that induces a ferromagnetic coupling between them. Overall, the material shows a magnetic slow relaxation in absence of external static field and a hysteretic behavior at 0.5 K. Low‐temperature magnetic studies, diamagnetic doping, and ab initio calculations highlight the crucial role played by the Dy–Dy ferromagnetic interaction. Overall, we report an original magnetic object at the frontier between single‐chain magnets and single‐molecule magnets that host intrachain couplings that cancel quantum tunneling between the MBBs. This compound is evidence that a bottom‐up approach through MOF design can induce spontaneous organization of MBBs able to produce remarkable molecular magnetic materials.