Chalcogen, Cu-Fe-O-Sr-Y, Y-x polyhedra

• Ce-Cu-Fe-O-Sr-Y
• Cu-Fe-Nd-O-Sr-Y
• Cu-Fe-O-Pb-Sr-Y
• Bi-Cu-Fe-O-Sr-Y
• magnetic properties
• thermal and thermodynamic properties
• structural properties
• electronic and electrical properties
• Moessbauer spectra
• disordered
• cuprate
• alkaline
• chalcogen
• high-tc superconductor
• tetragonal
• orthorhombic