Ba-Cu-O-Y, Electrical resistivity, Square pyramid 5-vertex

• Ba-Cu-O-Pr-Y
• Ba-Cu-O-Y-Zn
• Ba-Ca-Cu-O-Y
• Ba-Cu-La-O-Y
• transitional
• alkaline
• chalcogen
• rare earth
• disordered
• orthorhombic
• tetragonal