Ba-Cu-O-Y, Critical current density, Square pyramid 5-vertex

• Ba-Ca-Cu-O-Y
• Ba-Cu-O-Pr-Y
• Al-Ba-Cu-O-Y
• Ba-Cu-Li-O-Y
• values of critical current density
• disordered
• high-tc superconductor
• alkaline
• chalcogen
• rare earth
• orthorhombic
• tetragonal