Chalcogen, Lanthanoid, Cu-La-O, Values of electronic energy gap

• Cu-La-O-S
• Cu-La-O-Sr
• Ba-Cu-La-O
• Ca-Cu-La-O
• transitional
• lanthanoid
• rare earth
• chalcogen
• oxide
• tetragonal
• orthorhombic
• trigonal
• monoclinic
• cubic