Ba Co Cu O4.96 Y Barbey L, Nguyen N, Caignaert V, Hervieu M, Raveau B Materials Research Bulletin 27 (1992) 295-301 Mixed oxides of cobalt and copper with a double pyramidal layer structure _cod_database_code 1001549 _database_code_amcsd 0014364 3.8688 3.8688 7.5726 90 90 90 P4/mmm atom x y z occ Y1 0 0 .5 Ba1 0 0 0 Co1 .5 .5 .2649 .5 Cu1 .5 .5 .2649 .5 O1 .5 0 .3137 O2 .5 .5 0 .96