Ca0.12 Cu La1.88 O4.058 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 1006187 _database_code_amcsd 0015096 5.34975 5.34975 13.1874 90 90 90 F4/mmm atom x y z occ La1 0 0 .3604 .94 Ca1 0 0 .3604 .06 Cu1 0 0 0 O1 .25 .25 0 O2 0 0 .1821 .885 O3 .064 .064 .184 .0287 O4 .25 .25 .238 .0145