Fe-Nb, Moessbauer spectra

• Bi-Ca-Fe-Nb-O
• B-Cu-Fe-Nb-Si
• Bi-Fe-Nb-O
• Fe-Nb-O
• F-Fe-Nb
• values of Moessbauer spectra
• isomer shift
• quadrupole splitting
• hyperfine magnetic field
• transitional
• disordered
• chalcogen
• antiferromagnetic
• oxide
• cubic
• trigonal
• tetragonal
• hexagonal
• orthorhombic