Alkaline, Chalcogen, Values of electronic energy gap

• Ba-O-Ti
• Al-Ca-H-O-Si
• O-Sr-Ti
• B-Ca-H-O
• La-Mn-O-Sr
• chalcogen
• alkaline
• transitional
• disordered
• orthorhombic
• monoclinic
• tetragonal
• cubic
• trigonal