Two-Step Relaxation in a Linear Tetranuclear Dysprosium(III) Aggregate Showing Single-Molecule Magnet Behavior
Journal of the American Chemical Society2010Vol. 132(25), pp. 8538–8539
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Yun‐Nan Guo, Gong‐Feng Xu, Patrick Gámez, Lang Zhao, Shuang‐Yan Lin, Ruiping Deng, Jinkui Tang, Hongjie Zhang
Abstract
A well-defined two-step relaxation, described by the sum of two modified Debye functions, is observed in a new alkoxido-bridged linear tetranuclear Dy(III) aggregate showing single-molecule magnet behavior with a remarkably large energy barrier. This compound represents a model molecular aggregate with a clear two-step relaxation evidenced by frequency-dependent susceptibility, which therefore may stimulate further investigations regarding the relaxation dynamics of lanthanide-based systems.
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