Ba-Cu-Er-O, Er-x polyhedra, Superconductivity, Transitional

• Ba-Cu-Er-Ni-O
• Ba-Cu-Er-O-Zn
• Ba-Cu-Er-O-Pr
• Ba-Ca-Cu-Er-O
• superconducting transition temperature
• values of superconducting transition temperature
• composition derivative of superconducting transition temperature
• critical magnetic field
• alkaline
• chalcogen
• conductor
• cuprate
• high-tc superconductor
• orthorhombic
• tetragonal