Carbonate, Electronic and electrical properties, Trigonal

• C-Eu-F-K-O
• C-Mg-O
• C-Ca-O
• Ba-Br-C-O-Ru
• C-Ca-Mg-O
• electrical conductivity
• effective mass
• electronic energy gap
• values of electronic energy gap
• valence or charge transfer
• carbonate
• chalcogen
• disordered
• alkaline