Ba-Ca-Cu-O-Tl, Chalcogen, Oxide, Khan

• Ba-Ca-Cu-O-Tl-Zn
• Ba-Be-Ca-Cu-O-Tl
• Ba-Ca-Cu-O-Ti-Tl
• Ba-Ca-Cu-O-Tl-Y
• superconductivity
• superconducting transition temperature
• values of superconducting transition temperature
• optical properties
• phonons
• oxide
• transitional
• alkaline
• chalcogen
• high-tc superconductor
• tetragonal
• orthorhombic