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A Heterometallic Fe II –Dy III Single‐Molecule Magnet with a Record Anisotropy Barrier
Author(s) -
Liu JunLiang,
Wu JieYi,
Chen YanCong,
Mereacre Valeriu,
Powell Annie K.,
Ungur Liviu,
Chibotaru Liviu F.,
Chen XiaoMing,
Tong MingLiang
Publication year - 2014
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201407799
Subject(s) - anisotropy , ion , relaxation (psychology) , magnetization , quantum tunnelling , magnetic anisotropy , magnet , ab initio quantum chemistry methods , materials science , dysprosium , ab initio , single molecule magnet , crystallography , molecule , condensed matter physics , atomic physics , chemistry , nuclear magnetic resonance , physics , magnetic field , inorganic chemistry , psychology , social psychology , organic chemistry , quantum mechanics
A record anisotropy barrier (319 cm −1 ) for all d‐f complexes was observed for a unique Fe II ‐Dy III ‐Fe II single‐molecule magnet (SMM), which possesses two asymmetric and distorted Fe II ions and one quasi‐ D 5 h Dy III ion. The frozen magnetization of the Dy III ion leads to the decreased Fe II relaxation rates evident in the Mössbauer spectrum. Ab initio calculations suggest that tunneling is interrupted effectively thanks to the exchange doublets.