Chalcogen, Disordered, Metal, Transitional, Khan, Tetragonal

• Ba-Ca-Cu-O-Tl
• Ni-S-Se-Tl
• Fe-Mo-O-Sr
• Fe-Mo-Nd-O-Sr
• Ba-Cu-O-Y
• magnetic properties
• superconductivity
• superconducting transition temperature
• values of superconducting transition temperature
• optical properties
• transitional
• chalcogen
• disordered
• metal
• conductor