Cell and atoms, Disordered, Electronic energy gap, Hexagonal

• Al-H-Na-O-Si
• S-Ti
• Ba-Fe-Mn-O
• Al-H-O-P
• Ba-O-Ta-Ti
• values of electronic energy gap
• energy gap for direct transition
• energy gap for indirect transition
• disordered
• transitional
• rare earth
• chalcogen