Van der kolk

• I-Sm
• I-Tm
• I-Yb
• Ce-Er-Lu-O-P
• Ce-Ho-Lu-O-P
• electronic and electrical properties
• optical properties
• luminescence
• values of luminescence
• crystal electric field
• rare earth
• lanthanoid
• pnictogen
• nonmetal
• chalcogen
• tetragonal
• trigonal
• cubic