B-x polyhedra, Hexagonal, Moessbauer spectra

• B-Co-Fe-Y
• B-Fe-Tm
• B-Er-Fe
• B-Ru
• Ba-Fe-O-Sb
• hyperfine magnetic field
• isomer shift
• values of Moessbauer spectra
• quadrupole splitting
• metalloid
• transitional
• boride
• ferromagnetic
• rare earth