Ba-Ca-Cu-Hg-O-Pb, Hg-x polyhedra, Transitional

• Ba-Ca-Cu-Hg-O-Pb-Y
• Ba-Ca-Cu-Hg-O-Pb-Sr
• thermal and thermodynamic properties
• structural properties
• electronic and electrical properties
• superconductivity
• superconducting transition temperature
• disordered
• chalcogen
• alkaline
• cuprate
• high-tc superconductor
• tetragonal