Cu6.8 Fe1.2 La6.4 O20 Sr1.6 Genouel R, Michel C, Raveau B Chemistry of Materials 7 (1995) 2181-2184 Powder neutron diffraction study of the ordered oxygen-deficient perovskites (La, Sr)8 Cu8-x Fex O20 _cod_database_code 1001703 _database_code_amcsd 0012209 10.8088 10.8088 3.8992 90 90 90 P4/mbm atom x y z occ U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) La1 .2582 .4707 .5 .8 Sr1 .2582 .4707 .5 .2 Cu1 0 0 0 .4 Fe1 0 0 0 .6 Cu2 .5 0 0 Cu3 .2202 .7202 0 O1 0 0 .5 O2 .5 0 .5 .0516 .0516 .0067 .0029 0 0 O3 .2198 .7198 .5 .0324 .0324 .0078 .0090 0 0 O4 .3754 .8754 0 O5 .1611 .0928 0