Co-Fe-O, Co-x polyhedra, Electronic energy gap

• Ba-Co-Fe-O
• Co-Fe-La-O-Sr
• Bi-Co-Fe-O
• Co-Fe-Li-O
• values of electronic energy gap
• thermal energy gap
• energy gap for direct transition
• energy gap for indirect transition
• chalcogen
• transitional
• disordered
• oxide
• cubic
• tetragonal
• trigonal
• orthorhombic
• hexagonal