Presidential Young Investigator Award

这项研究将试图合成碳、氮或硼原子作为间隙原子的早期过渡金属的硫系簇合物或缩合簇合物。还将介绍具有丰富扩展固态化合物的金属-金属键合簇合物的性质和化学。团簇的大小和电子计数将会变化，团簇将被浓缩以形成扩展的金属-金属键合网络。由于PI的离散性质，它应该能够从根本上探测晶体结构、电子结构和磁性之间的关系。这一经验应该在研究稀土金属间化合物中发生的磁性相互作用方面得到更广泛的应用。鉴于这种材料在永磁体中的重要性，这一点具有特别重要的意义。

This research will attempt to synthesize chalcogenide cluster or condensed cluster compounds of early transition metals in which carbon, nitrogen or boron atoms act as interstitials. The properties and chemistry of metal-metal bonded clusters with rich extended solid state compounds will be related. The cluster size and electron count will be varied and the clusters condensed to form extended metal-metal bonded networks. Because of their discrete nature the PI should be able to probe in a fundamental way the relationships between crystal structure, electronic structure and magnetic properties. This experience should find wider application in the study of magnetic interactions occurring in rare-earth intermetallics. This is of particular significance in view of the importance of such materials in permanent magnets.