Ba-Ca-Cu-O-Tl, Electrical resistivity, Tetragonal, Transitional

• Ba-Ca-Cu-Hg-O-Tl
• Ba-Ca-Cu-O-Tl-Y
• Ba-C-Ca-Cu-O-Tl
• Ba-Ca-Cu-Hg-O-Tl-Yb
• alkaline
• high-tc superconductor
• chalcogen
• conductor
• transitional