#\#CIF_2.0
# Created by the Bilbao Crystallographic Server
# http://www.cryst.ehu.es
# Date: 26/10/2020 

data_5yOhtAoR
_audit_creation_date            2020-10-26
_audit_creation_method          "Bilbao Crystallographic Server"

_citation_journal_abbrev        "Journal of Magnetism and Magnetic Materials"
_citation_journal_volume        73
_citation_page_first            233
_citation_page_last             239
_citation_article_id            .
_citation_year                  1988
_citation_DOI                   10.1016/0304-8853(88)90299-5

loop_
_citation_author_name
"J. M. Barandiaran"
"D. Gignoux"
"D. Schmitt"
"J. C. Gomez-Sal"
"J. Rodriguez Fernandez"
"P. Chieux"
"J. Schweizer"

_atomic_positions_source_database_code_ICSD  64825
_atomic_positions_source_other               .

_temperature_position_structure         20
_temperature_atom_positions             .              
_temperature_non-magn_atom_positions    .
_temperature_cell_parameters            .

_transition_temperature  12.5
_experiment_temperature  2

loop_
_irrep_id
_irrep_dimension
_irrep_small_dimension
_irrep_direction_type
_irrep_action
_irrep_modes_number
_irrep_presence
mN1+  4  1  .  primary  1  .

_exptl_crystal_magnetic_properties_details
;
NPD
Position structure from a determination at 20K
;

_active_magnetic_irreps_details
;
1k magnetic structure
k-maximal magnetic symmetry
1-dim small irrep as primary
;

_parent_space_group.name_H-M_alt  'I 4/m m m'
_parent_space_group.IT_number                       139
_parent_space_group.transform_Pp_abc  'a,b,c;0,0,0'

loop_
_parent_propagation_vector.id
_parent_propagation_vector.kxkykz
k1 [1/2 0 1/2]

_parent_space_group.child_transform_Pp_abc  '2a,b,2c;0,0,0'
_space_group_magn.transform_BNS_Pp_abc  '1/2a-1/2c,b,a;0,0,0'

_space_group_magn.number_BNS  12.63
_space_group_magn.name_BNS  "C_c 2/m"
_cell_length_a             7.84400
_cell_length_b             3.92200
_cell_length_c             19.98600
_cell_angle_alpha          90.00
_cell_angle_beta           90.00
_cell_angle_gamma          90.00

loop_
_space_group_symop_magn_operation.id
_space_group_symop_magn_operation.xyz
1 x,y,z,+1 
2 -x,y,-z,+1 
3 -x,-y,-z,+1 
4 x,-y,z,+1 

loop_
_space_group_symop_magn_centering.id
_space_group_symop_magn_centering.xyz
1 x,y,z,+1 
2 x+1/4,y+1/2,z+3/4,+1 
3 x+1/2,y,z+1/2,+1 
4 x+3/4,y+1/2,z+1/4,+1 
5 x+1/2,y,z,-1 
6 x+3/4,y+1/2,z+3/4,-1 
7 x,y,z+1/2,-1 
8 x+1/4,y+1/2,z+1/4,-1 

loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Cu1 Cu 0.00000 0.50000 0.12500
Gd1 Gd 0.00000 0.00000 0.00000
Si1 Si 0.00000 0.00000 0.18400

loop_
_atom_site_moment.label
_atom_site_moment.crystalaxis_x
_atom_site_moment.crystalaxis_y
_atom_site_moment.crystalaxis_z
_atom_site_moment.symmform
_atom_site_moment.magnitude
Gd1 0.00000 7.2(4) 0.00000 0,my,0 7.2(4)

