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

• Ba-Cu-Fe-O-Y
• Ba-Co-Cu-O-Y
• Ba-Cu-La-O-Y
• Ba-Cu-O-Pr-Y
• thermal and thermodynamic properties
• electronic and electrical properties
• magnetic properties
• structural properties
• superconductivity
• oxide
• rare earth
• alkaline
• chalcogen
• transitional