Ba-Co-Cu-O-Y, Chalcogen, Co-x polyhedra, Tetragonal

• Ba-Co-Cu-O-Sr-Y
• Ba-Ca-Co-Cu-O-Y
• Ba-Co-Cu-Fe-O-Y
• superconductivity
• magnetic properties
• superconducting transition temperature
• structural properties
• electronic and electrical properties
• disordered
• oxide
• alkaline
• chalcogen
• rare earth