Ba-Cu-O-Y, Chalcogen, Electrical resistivity

• Ba-Cu-O-Pr-Y
• Ba-Cu-Fe-O-Y
• Ba-Ca-Cu-O-Y
• Ba-Cu-O-Y-Zn
• transitional
• alkaline
• chalcogen
• rare earth
• high-tc superconductor
• orthorhombic
• tetragonal
• cubic