Ca0.03 Cu La1.97 O4.12 Rial C, Moran E, Alario-Franco M, Amador U, Martinez J, Rodriguez-Carvajal J, Andersen N Physica C 297 (1998) 277-293 Effects of extra oxygen on the structure and superconductivity of La2-xCaxCuO4+y prepared by chemical oxidation _cod_database_code 1006188 _database_code_amcsd 0015097 5.3299 5.3870 13.1614 90 90 90 Bmab atom x y z occ La1 0 -.0007 .3609 .985 Ca1 0 -.0007 .3609 .015 Cu1 0 0 0 O1 .25 .25 .0050 1.01 O2 0 -.028 .1824 .845 O3 .058 .071 .183 .0775 O4 .25 .25 .225 .050