Abou aly

• Ba-Ca-Cu-Hg-O-Tl
• Ba-Ca-Cu-Hg-O-Tl-Yb
• Ba-Ca-Cu-Hg-O-Sm-Tl
• Ba-Ca-Cu-O-Tl
• Ba-Ca-Cu-Na-O-Tl
• electronic and electrical properties
• structural properties
• conductivity or resistivity
• superconductivity
• electrical resistivity
• transitional
• chalcogen
• alkaline
• multinary
• rare earth
• tetragonal
• cubic
• orthorhombic