#------------------------------------------------------------------------------ #$Date: 2014-07-11 17:35:18 +0300 (Fri, 11 Jul 2014) $ #$Revision: 120071 $ #$URL: file:///home/coder/svn-repositories/cod/cif/1/00/60/1006013.cif $ #------------------------------------------------------------------------------ # # This file is available in the Crystallography Open Database (COD), # http://www.crystallography.net/ # # All data on this site have been placed in the public domain by the # contributors. # data_1006013 _chemical_name_systematic ; Neodymium cerium copper oxide (1.85/.15/1/4) ; _chemical_formula_structural 'Nd1.85 Ce.15 Cu O4' _chemical_formula_sum 'Ce0.15 Cu Nd1.85 O4' _[local]_cod_chemical_formula_sum_orig 'Ce.15 Cu Nd1.85 O4' _publ_section_title ; Crystal structure refinement of Nd~2-x~Ce~x~CuO~4~ (x=.05-.30) by x-ray (295K) and neutron (1.5K) powder diffraction ; loop_ _publ_author_name 'Paulus, E F' 'Yehia, I' 'Fuess, H' 'Rodriguez, J' 'Vogt, T' 'Stroebel, J' 'Klauda, M' 'Saemann-Ischenko, G' _journal_name_full 'Solid State Communications' _journal_coden_ASTM SSCOA4 _journal_volume 73 _journal_year 1990 _journal_page_first 791 _journal_page_last 795 _journal_issue 11 _cell_length_a 3.94224(3) _cell_length_b 3.94224(3) _cell_length_c 12.0603(1) _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 187.4 _cell_formula_units_Z 2 _symmetry_space_group_name_H-M 'I 4/m m m' _symmetry_Int_Tables_number 139 _symmetry_cell_setting tetragonal loop_ _symmetry_equiv_pos_as_xyz 'x,y,z' '-x,-y,z' '-x,y,z' 'x,-y,z' '-y,x,z' 'y,-x,z' 'y,x,z' '-y,-x,z' '-x,-y,-z' 'x,y,-z' 'x,-y,-z' '-x,y,-z' 'y,-x,-z' '-y,x,-z' '-y,-x,-z' 'y,x,-z' '1/2+x,1/2+y,1/2+z' '1/2-x,1/2-y,1/2+z' '1/2-x,1/2+y,1/2+z' '1/2+x,1/2-y,1/2+z' '1/2-y,1/2+x,1/2+z' '1/2+y,1/2-x,1/2+z' '1/2+y,1/2+x,1/2+z' '1/2-y,1/2-x,1/2+z' '1/2-x,1/2-y,1/2-z' '1/2+x,1/2+y,1/2-z' '1/2+x,1/2-y,1/2-z' '1/2-x,1/2+y,1/2-z' '1/2+y,1/2-x,1/2-z' '1/2-y,1/2+x,1/2-z' '1/2-y,1/2-x,1/2-z' '1/2+y,1/2+x,1/2-z' loop_ _atom_type_symbol _atom_type_oxidation_number Nd3+ 3.000 Ce3+ 3.000 Cu2+ 2.000 O2- -2.000 loop_ _atom_site_label _atom_site_type_symbol _atom_site_symmetry_multiplicity _atom_site_Wyckoff_symbol _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_occupancy _atom_site_attached_hydrogens _atom_site_calc_flag Nd1 Nd3+ 4 e 0. 0. 0.3527(1) 0.925 0 d Ce1 Ce3+ 4 e 0. 0. 0.3527(1) 0.075 0 d Cu1 Cu2+ 2 a 0. 0. 0. 1. 0 d O1 O2- 4 c 0. 0.5 0. 1. 0 d O2 O2- 4 d 0. 0.5 0.25 1. 0 d loop_ _atom_site_aniso_label _atom_site_aniso_U_11 _atom_site_aniso_U_12 _atom_site_aniso_U_13 _atom_site_aniso_U_22 _atom_site_aniso_U_23 _atom_site_aniso_U_33 Nd1 0.0045(4) 0. 0. 0.0045 0. 0.0001 Ce1 0.0045(4) 0. 0. 0.0045 0. 0.0001 Cu1 0.0059(6) 0. 0. 0.0059 0. 0.001(1) O1 0.0081 0. 0. 0.0086 0. 0.0013(1) O2 0.0078 0. 0. 0.0078 0. 0.001 _refine_ls_R_factor_all 0.129 _cod_database_code 1006013 _journal_paper_doi 10.1016/0038-1098(90)90172-8