Chalcogen, Rare earth, Electronic energy gap, Orthorhombic

• Ba-Cu-F-O-Y
• Ca-La-Mn-O
• Ba-Cu-O-Y
• La-Mn-O
• La-O-Ti
• values of electronic energy gap
• energy gap for direct transition
• thermal energy gap
• energy gap for indirect transition
• polaron formation energy
• chalcogen
• rare earth
• lanthanoid
• transitional