稀土晶体材料与应用

稀土是我国重要的战略资源,在永磁体、合金、催化剂、石油精炼、精细抛光、发光材料、玻璃陶瓷等高新技术领域具有重要的应用。稀土晶体是一类重要的高端光学材料,是指稀土元素可以完整占据结晶学结构中某一格点的晶体,作为核心工作物质在激光技术与电离辐射探测技术中得到了广泛应用。以稀土激光晶体、稀土闪烁晶体、稀土倍频晶体、稀土单晶光纤为代表,综述了近年来面向不同应用领域的高端稀土晶体材料在组成设计与性能优化方面的研究进展。在生长技术方面,结晶生长的化学键合理论能够为多尺度稀土晶体生长提供精细化的关键因素控制技术,有利于获得高品质稀土晶体材料。

Rare Earth Crystal Materials and Their Applications

Rare earth serves as an important strategic resource in China. It has wide applications in high-tech fields of permanent magnets, alloys, catalysts, petroleum refining, fine polishing, luminescent materials, glass ceramics and so on. Rare earth crystal is a kind of important high-end optical materials. Rare earth crystals refer to crystals in which rare earth elements can completely occupy a certain lattice in the crystallographic structure. As the key operation materials, rare earth crystals have been widely used in laser technology and ionizing radiation detection technology. Taking rare earth laser crystals, rare earth scintillating crystals, rare earth frequency doubling crystals and rare earth single crystal fibers as examples, the research progress in both composition design and performance optimization of high-end rare earth crystal materials in different applications were reviewed. For advanced growth techniques, the chemical bonding theory of single crystal growth would provide optimal growth parameters for multi-scale rare earth crystals, which could help us to obtain high-quality rare earth crystal materials.