論文ID: 25023
Murataite is a rare oxide mineral composed of Ti, Zn, alkali metals, alkaline earth metals, and rare earth elements. Murataite belongs to the cubic crystal system and has a crystal structure corresponding to the 3 × 3 × 3 (M3) superstructure of the fluorite structure. Synthetic murataite M3, which has a similar crystal structure of natural murataite-(Y) but with different compositions, and its synthetic polymorphs (strictly speaking, “polysomes”) of M5 and M8 are being applied to Synroc as host materials for long-term storage of radioactive actinoids. They are also expected to be used as electroceramics recalled from their fluorite-related crystal structures. This review provides a detailed explanation of the historical background of murataites researches, the crystal structure including polysomes, the processing and microstructure, and the potential applications as “rediscovered” ceramic materials.
