Publication | Closed Access
Exploring the Role of Intramolecular Interactions in the Suppression of Quantum Tunneling of the Magnetization in a 3d-4f Single-Molecule Magnet
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Citations
45
References
2021
Year
Hydroxide-bridged Fe<sup>III</sup><sub>4</sub>Ln<sup>III</sup><sub>2</sub> clusters having the general formula [Fe<sub>4</sub>Ln<sub>2</sub>(μ<sub>3</sub>-OH)<sub>2</sub>(mdea)<sub>6</sub>(SCN)<sub>2</sub>(NO<sub>3</sub>)<sub>2</sub>(H<sub>2</sub>O)<sub>2</sub>]·4H<sub>2</sub>O·2MeCN {Ln = Y (<b>1</b>), Dy (<b>2</b>), mdea = <i>N</i>-methyldiethanolamine} were synthesized and magnetically characterized. The thermal relaxation of the magnetization for <b>2</b> and the diluted Fe<sup>III</sup><sub>4</sub>Dy<sup>III</sup>Y<sup>III</sup> complex <b>3</b> (with and without applied field) has been analyzed. The diluted sample shows a dominant QTM at low temperatures that can be removed with a 0.15 T <i>dc</i> field. Both <b>2</b> and <b>3</b> show moderately high <i>U</i><sub>eff</sub> barriers and exhibit hysteresis loops until 5 K.
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