IMPLEMENTATION OF MODULATED AND COMPOSITE STRUCTURES INTO THE ICDD DATABASE

摘要

Modulated and composite crystal structures are fascinating crystal structures which "violate" the main idea that "perfect" crystal structures should possess a three-dimensional periodicity. However, the violations follow rules associated with the existence of periodic "modulation waves". In that regard, they can be described as the three-dimensional hyper-section of a four- or higher-dimensional periodic structure requiring additional mathematical tools to be described.In past few decades, several of these types of structures have attracted various scientists based on their unique physical properties.