#\#CIF_2.0
# Created by the Bilbao Crystallographic Server
# http://www.cryst.ehu.es
# Date: 12/17/2021

data_5yOhtAoR
_audit_creation_date            2021-12-17
_audit_creation_method          "Bilbao Crystallographic Server"

_chemical_name_systematic
;
;
_chemical_name_common                    ?
_chemical_formula_moiety                 ?
_chemical_formula_structural             ?
_chemical_formula_analytical             ?
_chemical_formula_iupac                  ?
_chemical_formula_sum                    "Ce Cu Si"
_chemical_formula_weight                 ?
_chemical_melting_point                  ?
_chemical_compound_source                ?
_chemical_absolute_configuration         ?


_citation_journal_abbrev        "Solid State Communications"
_citation_journal_volume        58
_citation_page_first            559
_citation_page_last             562
_citation_article_id            .
_citation_year                  1986
_citation_DOI                   10.1016/0038-1098(86)90796-9

loop_
_citation_author_name
"D. Gignoux"
"D. Schmitt"
"M. Zerguine"

_temperature_position_structure         .
_temperature_atom_positions             .
_temperature_non-magn_atom_positions    .
_temperature_cell_parameters            .

_atomic_positions_source_database_code_ICSD  52850
_atomic_positions_source_other               .

_transition_temperature     15.5
_experiment_temperature     2.5

loop_
_irrep_id
_irrep_dimension
_irrep_small_dimension
_irrep_direction_type
_irrep_action
_irrep_modes_number
_irrep_presence
mGM6+ 2 2 special primary 1 .

_exptl_crystal_magnetic_properties_details
;
NPD
FM perpendicular to the c axis from the parent hexagonal space group.
The direction of the moments on the ab plane is undetermined. Here one of the possible directions keeping maximal symmetry has been arbitrarily chosen.
;

_active_magnetic_irreps_details
;
1k magnetic structure
2-dim irrep along a special direction
;

_parent_space_group.name_H-M_alt  'P 6_3/m m c'
_parent_space_group.IT_number                       194
_parent_space_group.transform_Pp_abc  'a,b,c;0,0,0'

loop_
_parent_propagation_vector.id
_parent_propagation_vector.kxkykz
k1 [0 0 0]

_parent_space_group.child_transform_Pp_abc  'a,b,c;0,0,0'
_space_group_magn.transform_BNS_Pp_abc  'a,a+2b,c;0,0,0'

_space_group_magn.number_BNS  63.463
_space_group_magn.name_BNS  "C m c' m' "
_space_group_magn.point_group_name  "m'm'm"
_space_group_magn.point_group_number  "8.4.27"
_cell_length_a                 4.228
_cell_length_b                 4.228
_cell_length_c                 7.926
_cell_angle_alpha              90.00
_cell_angle_beta               90.00
_cell_angle_gamma              120.00

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

loop_
_space_group_symop_magn_centering.id
_space_group_symop_magn_centering.xyz
1 x,y,z,+1 

loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
Ce1 Ce 0.00000 0.00000 0.00000 1
Cu1 Cu 0.33333 0.66667 0.25000 1
Si1 Si 0.33333 0.66667 0.75000 1

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
_atom_site_moment.spherical_azimuthal
_atom_site_moment.spherical_polar
Ce1 1.25 0.0 0.0 mx,0,0 1.25 ? ?

