Lanthanoid, Transitional, Thermal energy gap

• Ce-Rh-Sb
• Ce-Ni-Sn
• As-Ce-Rh
• Co-La-O-Sr
• Bi-F-La-O-S
• rare earth
• transitional
• lanthanoid
• conductor
• chalcogen
• orthorhombic
• cubic
• tetragonal
• trigonal
• monoclinic