Ba2 Cu3 O7 Y Capponi J, Chaillout C, Hewat A, Lejay P, Marezio M, Nguyen N, Raveau B, Soubeyroux J, Tholence J, Tournier R Europhysics Letters 3 (1987) 1301-1307 Structure of the 100 K Superconductor Ba2 Y Cu3 O7 between (5-300)K by Neutron Powder Diffraction _cod_database_code 1001454 _database_code_amcsd 0012635 3.8131 3.8806 11.6329 90 90 90 Pmmm atom x y z Ba1 .5 .5 .1827 Y1 .5 .5 .5 Cu1 0 0 0 Cu2 0 0 .3547 O1 0 0 .1590 O2 .5 0 .3771 O3 0 .5 .3773 O4 0 .5 0