Alkaline, Disordered, Transitional, Cubic, Electronic energy gap

• O-Sr-Ti
• Ba-O-Sr-Ti
• Ba-O-Ti
• Mg-Pr-Y
• Mo-O-Sr
• values of electronic energy gap
• energy gap for direct transition
• energy gap for indirect transition
• thermal energy gap
• charge-transfer energy
• alkaline
• transitional
• disordered
• chalcogen