Ba-Cu-Eu-O, Chalcogen, Eu-x polyhedra, Orthorhombic

• Ba-Cu-Eu-O-Pr
• Ba-Cu-Eu-O-Sr
• Ba-Cu-Eu-La-O
• thermal and thermodynamic properties
• structural properties
• superconductivity
• electronic and electrical properties
• superconducting transition temperature
• alkaline
• disordered
• chalcogen
• conductor
• high-tc superconductor