Ba-Cu-Hg-O, Hg-x polyhedra, Values of superconducting transition temperature

• Ba-Ca-Cu-Hg-O
• Ba-Ca-Cu-Hg-O-Tl
• Ba-Ca-Cu-Hg-O-Pb
• Ba-Ca-Cu-Hg-O-Y
• cuprate
• conductor
• chalcogen
• alkaline
• high-tc superconductor
• tetragonal