Chalcogen, Rare earth, Transitional, Values of electronic energy gap

• La-Mn-O-Sr
• La-Mo-O
• Nd-O-Ti
• Mo-O-Pr
• Co-La-O
• transitional
• chalcogen
• rare earth
• lanthanoid
• orthorhombic
• tetragonal
• monoclinic
• cubic
• trigonal