Ba-Cu-O-Y, Tetragonal, Tetrahedron 4-vertex, Transitional

• Ba-Cu-Fe-O-Y
• Ba-Ca-Cu-Hg-O-Tl-Y
• Ba-Co-Cu-O-Y
• Ba-Cu-O-Pb-Sr-Y
• electronic and electrical properties
• thermal and thermodynamic properties
• structural properties
• magnetic properties
• conductivity or resistivity
• cuprate
• disordered
• alkaline
• chalcogen
• high-tc superconductor