Ba-Cu-O-Y, Chalcogen, Trigonal bipyramid 5-vertex

• Ba-Cu-O-Pr-Y
• Ba-Cu-Ni-O-Y
• Ba-Ca-Cu-O-Y
• Ba-Cu-O-Sr-Y
• superconductivity
• electronic and electrical properties
• superconducting transition temperature
• thermal and thermodynamic properties
• values of superconducting transition temperature
• rare earth
• alkaline
• chalcogen
• high-tc superconductor
• transitional
• orthorhombic
• tetragonal