Chalcogen, Oxide, Rare earth, Eu-Y, Photoluminescence spectra

• Eu-O-Y
• Eu-O-S-Y
• Eu-Mo-O-Y
• Eu-Nb-O-Y
• Al-Ca-Eu-O-Y
• rare earth
• oxide
• lanthanoid
• chalcogen
• transitional
• cubic
• monoclinic
• trigonal
• orthorhombic
• hexagonal