Chalcogen, Disordered, Metalloid, Electronic energy gap, Fe-Si

• Al-Fe-H-Mg-O-Si
• Fe-O-Si
• Fe-Mg-O-Si
• Fe-H-Mg-O-Si
• Al-Ca-Fe-O-Si
• values of electronic energy gap
• thermal energy gap
• metalloid
• transitional
• disordered
• chalcogen
• monoclinic
• orthorhombic
• cubic
• triclinic
• trigonal