Chalcogen, Transitional, Khan, Tetragonal

• Ba-Ca-Cu-O-Tl
• Ba-Ca-Cu-O-Tl-Zn
• Ni-Se-Tl
• Ni-S-Tl
• Ba-Be-Ca-Cu-O-Tl
• superconductivity
• magnetic properties
• superconducting transition temperature
• values of superconducting transition temperature
• optical properties
• chalcogen
• transitional
• conductor
• oxide
• alkaline