1991, Fe, Orthorhombic, Transitional

• Ba-Cu-Fe-O-Y
• C-Fe
• Fe-Ho-P
• Fe-Gd-O-Sm
• Al-Fe-Ge-O
• magnetic properties
• structural properties
• Moessbauer spectra
• electronic and electrical properties
• superconductivity
• transitional
• chalcogen
• conductor
• oxide
• non-disordered