Ba0.78MgEu0.22F4 oS28 36

• Ba-Eu-F-Mg
• Ba-Er-F-Mg-Yb
• Ba-F-Mg-Tb
• Ba-F-Mg-Tm-Yb
• optical properties
• luminescence
• electronic and electrical properties
• photoluminescence spectra
• valence or charge transfer
• halogen
• nonmetal
• rare earth
• lanthanoid
• luminescent
• orthorhombic