Exploring the Role of Intramolecular Interactions in the Suppression of Quantum Tunneling of the Magnetization in a 3d-4f Single-Molecule Magnet
Muhammad Nadeem AkhtarDivision of Inorganic Chemistry, Institute of Chemistry, Baghdad-ul-Jadeed Campus, The Islamia University of Bahawalpur, Bahawalpur 63100, PakistanMurad A. AlDamenDepartment of Chemistry, School of Science, The University of Jordan, Amman 11942, JordanColin D. McMillenDepartment of Chemistry, Clemson University, Clemson, South Carolina 29634, United StatesAlbert EscuerDepartament de Química Inorgànica i Orgànica, Secció Inorgànica and Institute of Nanoscience and Nanotecnology (IN2UB), Universitat de Barcelona, Marti i Franques 1-11, Barcelona 08028, SpainJúlia MayansInstituto de Ciencia Molecular (ICMol), Universidad de Valencia, Catedrático José Beltran 2, 46980 Paterna, Valencia, Spain
2021en
ABI
Annotatsiya
Hydroxide-bridged FeIII4LnIII2 clusters having the general formula [Fe4Ln2(μ3-OH)2(mdea)6(SCN)2(NO3)2(H2O)2]·4H2O·2MeCN {Ln = Y (1), Dy (2), mdea = N-methyldiethanolamine} were synthesized and magnetically characterized. The thermal relaxation of the magnetization for 2 and the diluted FeIII4DyIIIYIII complex 3 (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 dc field. Both 2 and 3 show moderately high Ueff barriers and exhibit hysteresis loops until 5 K.
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