B-x polyhedra, Moessbauer spectra, Trigonal

• Fe-O-Ti
• B-Fe-H-O
• B-Fe-Nd
• B-Co-Fe-Gd
• B-Fe-La
• isomer shift
• quadrupole splitting
• values of Moessbauer spectra
• hyperfine magnetic field
• transitional
• non-disordered
• antiferromagnetic
• ferromagnetic
• chalcogen