Syntheses, crystal structures, magnetic and optical properties of novel solid-state rare-earth cyanamide and carbodiimide compounds

新型固态稀土氰胺和碳二亚胺化合物的合成、晶体结构、磁性和光学性质

• 批准号: 23918006
• 负责人: Professor Dr. Richard Dronskowski
• 金额: --
• 依托单位: Lehrstuhl für Festkörper- und Quantenchemie
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 2006
• 资助国家: 德国
• 起止时间: 2005-12-31 至 2008-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/23918006?language=en
• 关键词: Syntheses; crystal; structures; magnetic; optical

This mostly synthetic/experimental project is targeted at the preparation of novel magnetic and luminescent materials belonging to the class of solid-state rare-earth cyanamide and carbodiimide compounds containing Ln-NCN2- structural fragments. It will be based on our recently developed flux route employing the simple rare-earth halides as well as alkali-metal cyanides and azides as precursors. We plan to further enrich the europium-related synthetic contributions, characterize other new compounds using X-ray diffraction methods, and rationalize their compositions and also structural properties by means of electronic structure calculations. In addition, the synthetic approach will be extended to some of the other rare-earth elements. Eventually, a couple of new materials containing various rare-earth elements or doped variants of these phases will be synthesized. Physical characterization, in particular magnetic measurements as well as the examination of their luminescence properties, will be another major focus of this project.

这个主要是合成/实验项目的目标是制备新型磁性和发光材料，这些材料属于含有Ln-NCN 2结构片段的固态稀土氰胺和碳二亚胺化合物的类别。它将基于我们最近开发的熔剂路线，采用简单的稀土卤化物以及碱金属氰化物和叠氮化物作为前体。我们计划进一步丰富铕相关的合成贡献，使用X射线衍射方法表征其他新化合物，并通过电子结构计算使其组成和结构特性合理化。此外，合成方法将扩展到其他一些稀土元素。最终，将合成几种含有各种稀土元素或这些相的掺杂变体的新材料。物理特性，特别是磁性测量以及发光特性的检查，将是该项目的另一个主要重点。