Chalcogen, Electrical resistivity, Khan

• Ba-Ca-Cu-O-Tl
• La-Mn-O-Sr-Zn
• Bi-Ca-Cu-O-Pb-Sr
• Co-Fe-O-Sr
• Ni-S-Tl
• chalcogen
• transitional
• oxide
• conductor
• alkaline
• tetragonal
• orthorhombic
• cubic
• hexagonal
• trigonal