Ba-Fe-O, Conductor, Moessbauer spectra, Tetragonal

• Ba-Cu-Fe-O-Y
• Ba-Cu-Fe-Lu-O
• Ba-Cu-Eu-Fe-O
• Ba-Cu-Fe-Gd-O
• Ba-Fe-O-Sr
• values of Moessbauer spectra
• quadrupole splitting
• isomer shift
• hyperfine magnetic field
• alkaline
• oxide
• chalcogen
• conductor
• transitional