Solid-state materials are widely used in semiconductors, phosphors, and batteries, and have become an indispensable part of modern life. Substitution of elements in these complex composite materials is a popular technique to achieve desired material properties. Various properties can be achieved by partially replacing oxygen in the oxide solid with another element such as fluorine (composite anion technology).
Click here for original story, Structural determination of complex anion materials
Source: Phys.org