Apatite, Disordered, Hexagonal, Photoluminescence spectra

• Ba-Cl-Eu-O-P
• Ca-Eu-F-O-P
• Ca-Cl-Eu-O-P
• Ba-Cl-Eu-La-O-P
• Ba-Cl-Eu-Gd-O-P
• disordered
• chalcogen
• apatite
• luminescent
• rare earth