Cu6.8 Fe1.2 La5.2 O20 Sr2.8 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 1001702 _database_code_amcsd 0012208 10.7870 10.7870 3.8915 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 .2585 .4710 .5 .65 Sr1 .2585 .4710 .5 .35 Cu1 0 0 0 .4 Fe1 0 0 0 .6 Cu2 .5 0 0 Cu3 .2225 .7225 0 O1 0 0 .5 O2 .5 0 .5 .0297 .0297 .0043 .0123 0 0 O3 .2195 .7195 .5 .0182 .0182 .0041 .0092 0 0 O4 .3768 .8768 0 O5 .1578 .0958 0