B-x polyhedra, Effective mass, Fe-O

• B-Fe-H-O
• B-Fe-O
• B-C-Fe-H-O
• B-Fe-I-O
• B-Fe-H-O-P
• electrical conductivity
• chalcogen
• transitional
• disordered
• metalloid
• cubic
• trigonal
• orthorhombic
• monoclinic
• hexagonal