Ba-Cu-O-Y, Chalcogen, Disordered, Quaternary

• superconductivity
• electronic and electrical properties
• thermal and thermodynamic properties
• superconducting transition temperature
• values of superconducting transition temperature
• quaternary
• disordered
• alkaline
• chalcogen
• rare earth
• orthorhombic
• tetragonal
• cubic
• trigonal