Ba-Eu, Lanthanoid, Photoluminescence spectra

• Ba-Eu-O-Si-Zn
• Ba-Eu-N-O-Si
• Al-Ba-Eu-Mg-O
• Ba-Ca-Eu-Mg-O-Si
• Al-Ba-Eu-Mg-O-Si
• rare earth
• lanthanoid
• alkaline
• luminescent
• chalcogen
• hexagonal
• monoclinic
• trigonal
• orthorhombic
• tetragonal