Ba-Cu-O-Y-Zn, Square pyramid 5-vertex

• Ba-Ca-Cu-O-Y-Zn
• superconductivity
• superconducting transition temperature
• electronic and electrical properties
• values of superconducting transition temperature
• thermal and thermodynamic properties
• conductor
• cuprate
• alkaline
• chalcogen
• disordered
• orthorhombic