Composition derivative of superconducting transition temperature, Transitional

• Ba-Cu-O-Y-Zn
• Ba-Cu-Fe-O-Y
• Ba-Cu-Ni-O-Y
• Ba-Co-Cu-O-Y
• Ba-Cu-Ga-O-Y
• transitional
• conductor
• rare earth
• alkaline
• chalcogen
• orthorhombic
• tetragonal
• cubic
• hexagonal
• trigonal