Monoclinic, Nonmetal, Rare earth, Photoluminescence spectra

• Al-Dy-Eu-O-Sr
• Al-Eu-O-Sr
• Al-Eu-N-O-Si-Sr
• Ba-Eu-O-Si-Zn
• Ca-Eu-O-P
• rare earth
• nonmetal
• chalcogen
• luminescent
• lanthanoid