Ba-Cu-Er-O, Chalcogen, Electronic and electrical properties, Er-x polyhedra

• Ba-Cu-Er-Ni-O
• Ba-Cu-Er-O-Zn
• Ba-Cu-Er-O-Pr
• Ba-Ca-Cu-Er-O
• conductivity or resistivity
• electrical resistivity
• electrical conductivity
• oxide
• lanthanoid
• chalcogen
• alkaline
• rare earth
• orthorhombic
• tetragonal
• monoclinic
• cubic