分子磁体中的磁各向异性研究

项目名称： 分子磁体中的磁各向异性研究

项目编号： No.21471077

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 数理科学和化学

项目作者： 王新益

作者单位： 南京大学

项目金额： 80万元

中文摘要： 磁各向异性不仅是分子磁体研究的中心，还处于整个磁性材料的前沿领域。然而，人们对磁各向异性的理解还不够深入，更重要的是对磁各向异性的设计和调控还相当欠缺，亟需进行更加细致的研究。本项目计划立足于分子磁性材料的研究前沿，从单离子磁各向异性和各向异性磁交换这两方面着手，以配位化学的基本原理为基础，从对称性原则出发，设计合成能够导致大的磁各向异性的、具有特定的配位环境及对称性的有机配体，构筑具有大的磁各向异性的分子磁性材料，通过磁测量、EPR光谱、单晶转动磁测量、理论计算等多种实验理论方法系统研究其中的磁各向异性，研究由此构筑的单离子磁体、单分子磁体、单链磁体、及其它具有较大各向异性的分子磁性化合物的性质，研究它们的制备、结构、性质、磁－结构相关等基本科学问题，为设计合成新型分子磁性材料打下基础。

中文关键词： 磁各向异性；分子磁体；单分子磁体；单链磁体；功能配合物

英文摘要： Magnetic anisotropy lies in the center of the research of both the classical and molecular magnetic materials. Notwithstanding its high importance, knowledge on the magnetic anisotropy is still quite limited, especially for its efficient design and controllable manipulation. Detailed researches on the magnetic anisotropy are thus highly necessary. This project will be focused on the research frontiers of the molecular magnetic materials. Based on the foundations of the coordination chemistry and the symmetrical principle, we will investigate both the single-ion magnetic anisotropy and the anisotropic magnetic coupling in the molecular magnetic materials. Organic ligands with specific coordination environment and symmetries will be designed, aiming at the very big magnetic anisotropy of the molecular magnetic materials. Detailed investigations, including the magnetic measurement, EPR spectroscopy, rotation magnetic measurement on the single crystal and theoretical calculation, will be performed to thoroughly investigate the magnetic anisotropy of the obtained materials. The design, syntheses, structures, magnetic properties and the magneto-structural relationship of the resulting materials, including the single-molecule magnets, single-ion magnets, single-chain magnets and other materials with high magnetic anisotropy will be studied, which will hopefully lay a good foundation for the design and preparation of the new functional molecular magnetic materials.

英文关键词： magnetic anisotropy;molecular magnet;single-molecule magnet;single-chain magnet;functional coordination compound