Cu2.2 Ni0.8 O8 Pb2 Sr2 Y Amador U, Garcia-Alvarado F, Moran E, Alario-Franco M, Rodriguez-Carjaval J Physica C 165 (1990) 499-504 A structural study of Ni-substituted Pb2Sr2YCu3O8+ - delta _cod_database_code 1006032 _database_code_amcsd 0015016 5.3956 5.4310 15.6573 90 90 90 Cmmm atom x y z occ Pb1 .5 0 .3881 Sr1 0 0 .2199 Y1 0 0 0 Cu1 0 0 .5 Cu2 .5 0 .1072 .6 Ni1 .5 0 .1072 .4 O1 .5 0 .2489 O2 .050 .064 .3816 .25 O3 .25 .25 .0924