Ba-Cu-O-Y, Chalcogen, Critical current density

• Ba-Ca-Cu-O-Y
• Ba-Cu-O-Pr-Y
• Ba-Cu-Ho-O-Y
• Ba-Cu-Fe-O-Y
• values of critical current density
• rare earth
• transitional
• alkaline
• chalcogen
• high-tc superconductor
• orthorhombic
• tetragonal