Apatite, Chalcogen, Disordered, Lanthanoid, Photoluminescence spectra

• Ba-Cl-Eu-O-P
• Ca-Eu-F-O-P
• Ca-Cl-Eu-O-P
• Ba-Cl-Eu-Gd-O-P
• Ba-Cl-Eu-Lu-O-P
• disordered
• lanthanoid
• apatite
• chalcogen
• rare earth
• hexagonal
• trigonal