Rare earth, Thermal energy gap

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