Alkaline, Oxide, Transitional, Cubic, Electronic energy gap

• O-Sr-Ti
• Ca-O-Ti
• Ba-O-Sr-Ti
• Ca-Hf-O
• O-Sr-Zr
• values of electronic energy gap
• energy gap for direct transition
• energy gap for indirect transition
• charge-transfer energy
• thermal energy gap
• transitional
• oxide
• alkaline
• chalcogen