Alkaline, Chalcogen, Transitional, Kawano

• Ba-Co-Fe-O
• Ba-Co-Fe-O-Sr
• Co-Fe-O-Sr
• Bi-Ca-Cu-O-Sr-Y
• La-Mn-O-Sr
• magnetic properties
• structural properties
• magnetic susceptibility
• superconductivity
• optical properties
• chalcogen
• transitional
• alkaline
• oxide
• disordered
• orthorhombic
• hexagonal
• trigonal
• triclinic
• tetragonal