Chalcogen, Square pyramid 5-vertex, Superconductivity

• Ba-Cu-O-Y
• Cu-La-O-Sr
• Bi-Ca-Cu-O-Pb-Sr
• Ba-Ca-Cu-O-Tl
• Ba-Cu-Gd-O
• superconducting transition temperature
• values of superconducting transition temperature
• critical magnetic field
• critical current density
• chalcogen
• transitional
• disordered
• alkaline
• high-tc superconductor
• orthorhombic
• tetragonal
• monoclinic
• cubic
• trigonal