Chalcogen, Metal, Electrical resistance - temperature diagram

• Bi-Ca-Cu-O-Pb-Sr
• S-Ta
• Nb-Se
• Bi-Ca-Cu-O-Sr
• Ba-Ca-Cu-O-Tl
• metal
• chalcogen
• transitional
• conductor
• disordered
• tetragonal
• orthorhombic
• trigonal
• cubic
• monoclinic