Chalcogen, Disordered, Transitional, Values of moessbauer spectra

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