Ba Cu O5.05 Sr Chaillout C, Huang Q, Cava R, Chenavas J, Santoro A, Bordet P, Hodeau J, Krajewski J, Levy J, Marezio M, Peck W Physica C 195 (1992) 335-344 Synthesis and crystal structure of BaSrCuO2+xCO3 _cod_database_code 1008567 _database_code_amcsd 0016458 5.5899 5.5899 7.7153 90 90 90 P4/mbm atom x y z occ Ba1 0 0 .2115 .5 Sr1 0 0 .2423 .5 Cu1 .5 0 0 C1 .5 0 .5 O1 .3434 .8434 .4553 .2625 O2 .2509 .7509 .0187 .5 O3 .4672 .9672 .3286 .25 O4 .4140 .9140 .3771 .25