Chalcogen, Disordered, Ferromagnetic, Values of moessbauer spectra

• Fe-O
• Co-Fe-O
• Ba-Cu-Fe-O-Y
• Fe-Ni-O
• Fe-O-Sr
• ferromagnetic
• disordered
• chalcogen
• transitional
• oxide
• cubic
• orthorhombic
• hexagonal
• trigonal
• tetragonal