High-spin molecules with magnetic anisotropy toward single-molecule magnets.
High-spin molecules with magnetic anisotropy toward single-molecule magnets.
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DOI：
10.1002/chem.200401100
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发表时间：
2005-09
期刊：
影响因子：
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通讯作者：
H. Oshio;M. Nakano
中科院分区：
文献类型：
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作者：
H. Oshio;M. Nakano
具有易轴向磁各向异性的高自旋分子沿磁各向异性轴表现出缓慢的自旋翻转磁弛豫，称为单分子磁体（SMMs）。smm在低温下表现为分子级永磁体，并通过量子隧穿过程发生磁弛豫；这种分子有望用于量子器件。我们首先讨论了制备高自旋分子的分子内铁磁相互作用。其次，我们确定了具有d(n)构型的单金属离子的磁各向异性，并讨论了分子各向异性是如何由组装的组分金属离子的单离子各向异性引起的。
High-spin molecules with easy-axis magnetic anisotropy show slow magnetic relaxation of spin-flipping along the axis of magnetic anisotropy and are called single-molecule magnets (SMMs). SMMs behave as molecular-size permanent magnets at low temperature and magnetic relaxation occurs by quantum tunneling processes; such molecules are promising candidates for use in quantum devices. We first discuss intramolecular ferromagnetic interactions for preparing high-spin molecules. Second, we determine the magnetic anisotropy for single metal ions with d(n) configurations and discuss how molecular anisotropy arises from single-ion anisotropy of the assembled component metal ions.