Single-Molecule Magnets
Single-Molecule Magnets
复制标题
DOI：
10.1007/978-3-662-05250-1_3
复制
发表时间：
2003
期刊：
影响因子：
--
通讯作者：
K. Takeda;K. Awaga
中科院分区：
文献类型：
--
作者：
K. Takeda;K. Awaga
单分子磁体是研究纳米级磁体的最佳材料之一。自组装磁性材料位于离散原子和大块磁体之间的边界区域，表现出不寻常的经典和量子磁性，如介观尺度磁体。在本章中，我们将回顾12核Mn团簇（Mn 12）作为SMM的化学和物理。在解释了Mn 12的磁化过程和量子隧穿或相干性之后，我们将描述Mn 12中的磁结构相关性，指的是Mn 12的Jahn-Teller异构体;在Mn（III）位点的结构上的微小差异引起磁弛豫的显著差异。还描述了SMM的可能应用。
Single-molecule magnets (SMMs) are among the best materials for studies of nano-scale magnets. SMMs are located in the boundary region between the discrete atoms and the bulk magnets, and exhibit unusual classical and quantum magnetic properties such as meso-scale magnets. In this chapter, we will review the chemistry and physics of 12-nucleus Mn clusters (Mn12) as a SMM. After explaining the magnetization process and the quantum tunneling or coherence in Mn12, we will describe the magneto-structural correlation in Mn12, referring to the Jahn—Teller isomers of Mn12; a slight difference in structure at the Mn(III) site gives rise to a significant difference in magnetic relaxation. The possible application of SMMs is also described.