La2NiO4 Rodriguez-Carvajal J, Fernandez-Diaz M, Martinez J Journal of Physics: Condensed Matter 3 (1991) 3215-3234 Neutron diffraction study on structural and magnetic properties of La2NiO4 _cod_database_code 1006043 _database_code_amcsd 0013264 5.4995 5.4995 12.5052 90 90 90 *P4_2/ncm .25 -.25 .25 atom x y z La1 -.0072 -.0072 .3639 Ni1 0 0 0 O1 .25 .25 -.0155 O2 .25 .75 0 O3 .0314 .0314 .1771