ErBr3

Erbium tribromide (ErBr3) is an inorganic ceramic compound belonging to the rare-earth halide family, composed of erbium and bromine. This material is primarily of research and specialty interest, used in applications requiring rare-earth functionality such as optical devices, phosphors, and specialized catalysts where erbium's unique electronic properties are leveraged. ErBr3 is notable within the rare-earth halide class for its potential in photonic and luminescent applications, though it remains less common in mainstream engineering than oxide-based rare-earth ceramics.