Disordered, Metal, Transitional, Electronic energy gap, Trigonal

• Bi-Fe-O
• S-Ti
• Fe-O
• Co-La-O
• Li-O-V
• values of electronic energy gap
• energy gap for direct transition
• energy gap for indirect transition
• polaron formation energy
• thermal energy gap
• disordered
• metal
• transitional
• chalcogen
• conductor