Cu-x polyhedra, Values of superconducting transition temperature

• Ba-Cu-O-Y
• Ba-Ca-Cu-O-Tl
• Cu-La-O-Sr
• Bi-Ca-Cu-O-Pb-Sr
• Ba-Cu-Gd-O
• transitional
• disordered
• chalcogen
• high-tc superconductor
• alkaline
• orthorhombic
• tetragonal
• cubic
• trigonal
• hexagonal