Ba-Fe-O, Chalcogen, Disordered, Oxide, Isomer shift

• Ba-Cu-Fe-O-Y
• Ba-Fe-La-O
• Ba-Co-Fe-O
• Ba-F-Fe-O
• oxide
• disordered
• alkaline
• chalcogen
• transitional
• cubic
• tetragonal
• hexagonal
• trigonal
• orthorhombic