A2aa

• Bi-Ca-Cu-O-Pb-Sr
• Bi-Ca-Cu-O-Sr-Y
• Bi-Ca-Cu-Fe-O-Sr
• Bi-Ca-Cu-O-Pb-Sb-Sr
• Bi-Ca-Co-Cu-O-Pb-Sr
• superconductivity
• electronic and electrical properties
• superconducting transition temperature
• values of superconducting transition temperature
• magnetic properties
• transitional
• conductor
• chalcogen
• alkaline
• pnictogen
• orthorhombic
• tetragonal