探索分子内相互作用在抑制3d-4f单分子磁体中磁化强度量子隧穿方面的作用。
Exploring the Role of Intramolecular Interactions in the Suppression of Quantum Tunneling of the Magnetization in a 3d-4f Single-Molecule Magnet.
作者信息
Akhtar Muhammad Nadeem, AlDamen Murad A, McMillen Colin D, Escuer Albert, Mayans Júlia
机构信息
Division of Inorganic Chemistry, Institute of Chemistry, Baghdad-ul-Jadeed Campus, The Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan.
Department of Chemistry, School of Science, The University of Jordan, Amman 11942, Jordan.
出版信息
Inorg Chem. 2021 Jul 5;60(13):9302-9308. doi: 10.1021/acs.inorgchem.0c03682. Epub 2021 Jun 14.
Hydroxide-bridged FeLn clusters having the general formula [FeLn(μ-OH)(mdea)(SCN)(NO)(HO)]·4HO·2MeCN {Ln = Y (), Dy (), mdea = -methyldiethanolamine} were synthesized and magnetically characterized. The thermal relaxation of the magnetization for and the diluted FeDyY complex (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 field. Both and show moderately high barriers and exhibit hysteresis loops until 5 K.
合成了通式为[FeLn(μ-OH)(mdea)(SCN)(NO)(H₂O)]·4H₂O·2MeCN {Ln = Y (), Dy ()，mdea = N-甲基二乙醇胺}的氢氧化物桥联铁镧系簇合物，并对其进行了磁性表征。分析了 的磁化热弛豫以及稀释的FeDyY络合物（有和没有外加磁场的情况）。稀释后的样品在低温下显示出占主导地位的量子隧穿磁矩（QTM），可通过0.15 T的磁场消除。 和 都显示出适度高的能垒，并且在5 K以下都表现出磁滞回线。
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