Ba-Cu-O-Y, Critical current density, Trigonal bipyramid 5-vertex

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