Ba2 Cu2.98 O6.96 Y Roth G, Heger G, Renker B, Pannetier J, Caignaert V, Hervieu M, Raveau B Physica C 153 (1988) 972-973 Crystallographic study of the tetragonal high-Tc superconductor YBa2(Cu.95Fe.05)3O7 _cod_database_code 1001378 _database_code_amcsd 0015011 3.858 3.858 11.585 90 90 90 P4/mmm atom x y z occ Y1 .5 .5 .5 Ba1 .5 .5 .1853 Cu1 0 0 0 .978 Cu2 0 0 .3568 O1 0 .5 0 .50 O2 .5 0 .3779 O3 0 0 .1580 .98