Disordered, Metal, Non-disordered, Electronic energy gap, Trigonal

• Bi-Fe-O
• Bi-Se
• Bi-Te
• S-Ti
• Fe-O
• values of electronic energy gap
• energy gap for direct transition
• energy gap for indirect transition
• charge-transfer energy
• thermal energy gap
• non-disordered
• metal
• disordered
• conductor
• chalcogen