Ba-Cu-Er-O, Chalcogen, Cuboctahedron 12-vertex

• Ba-Cu-Er-Ni-O
• Ba-Cu-Er-O-Zn
• Ba-Ca-Cu-Er-O
• Al-Ba-Cu-Er-O
• magnetic properties
• electronic and electrical properties
• thermal and thermodynamic properties
• superconductivity
• superconducting transition temperature
• disordered
• lanthanoid
• chalcogen
• alkaline
• oxide
• orthorhombic
• tetragonal
• cubic