Chalcogen, Conductor, Disordered, Semiconductor, Values of moessbauer spectra

• Fe-O
• Fe-O-Sr
• Co-Fe-O
• Ba-Cu-Fe-O-Y
• Fe-La-O-Sr
• disordered
• semiconductor
• chalcogen
• conductor
• transitional
• cubic
• tetragonal
• orthorhombic
• trigonal
• hexagonal