B-x polyhedra, Co-Fe-O, Moessbauer spectra

• Co-Fe-O-Zn
• Co-Fe-Mn-O
• B-Co-Fe-O
• Co-Fe-Ni-O
• isomer shift
• values of Moessbauer spectra
• hyperfine magnetic field
• quadrupole splitting
• disordered
• chalcogen
• transitional
• ferrimagnet
• ferromagnetic
• cubic
• orthorhombic
• tetragonal