Chalcogen, Oxide, Charge transfer, Orthorhombic

• Ba-Cu-O-Y
• La-Mn-O
• Ba-Cu-O-Sm
• Bi-Cu-Nd-O-Pb-Sr
• Bi-Ca-Cu-O-Sr-Y
• effective charge
• values of valence or charge transfer
• electron density maps
• oxide
• chalcogen
• transitional
• disordered
• alkaline