#\#CIF_2.0
# Created by the Bilbao Crystallographic Server
# http://www.cryst.ehu.es
# Date: 01/05/2021 

data_5yOhtAoR
_audit_creation_date            2021-05-01
_audit_creation_method          "Bilbao Crystallographic Server"

_citation_journal_abbrev        "Journal of Magnetism and Magnetic Materials"
_citation_journal_volume        321
_citation_page_first            188
_citation_page_last             191
_citation_article_id            .
_citation_year                  2009
_citation_DOI                   10.1016/j.jmmm.2008.08.102

loop_
_citation_author_name
"R. Nirmala"
"A.V. Morozkin"
"O. Isnard"
"A.K. Nigam"

_atomic_positions_source_database_code_ICSD  162009
_atomic_positions_source_other               .

_transition_temperature  ?
_experiment_temperature  2

loop_
_irrep_id
_irrep_dimension
_irrep_small_dimension
_irrep_direction_type
_irrep_action
_irrep_modes_number
_irrep_presence
mGM3  2  2  special  primary  2  .
mGM2  1  1  .  secondary  1  yes

_exptl_crystal_magnetic_properties_details
;
NPD
The symmetry of this structure does not allow FM along any direction, but a FM transition is reported at 5K, and no transition temperature into this new phase is given.
FM properties are also reported within this phase. They are inconsistent with the MSG of the proposed structure.
Not clear which method was used to enumerate and check possible models for the spin arrangement. Only the model that is proposed is mentioned. 
;

_active_magnetic_irreps_details
;
1k magnetic structure
2-dim irrep along a special direction as primary
A significant weight of a secondary irrep spin mode is necessarily present in the spin arrangement that is proposed.
The collinearity of the model requires a very specific correlation between the amplitudes of the spin modes corresponding to the primary and the secondary irrep present in the structure.
;

_parent_space_group.name_H-M_alt  'I -4 3 d'
_parent_space_group.IT_number                       220
_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,b,c;0,-1/4,1/8'

_space_group_magn.number_BNS  122.336
_space_group_magn.name_BNS  "I -4' 2 d'"
_cell_length_a             9.56000
_cell_length_b             9.56000
_cell_length_c             9.56000
_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+1/2,+1 
3 -x,y+1/2,-z+1/2,+1 
4 -x,-y+1/2,z,+1 
5 y+1/4,-x+3/4,-z+1/4,-1 
6 -y+3/4,x+3/4,-z+1/4,-1 
7 -y+3/4,-x+1/4,z+1/4,-1 
8 y+1/4,x+1/4,z+1/4,-1 

loop_
_space_group_symop_magn_centering.id
_space_group_symop_magn_centering.xyz
1 x,y,z,+1 
2 x+1/2,y+1/2,z+1/2,+1 

loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Sb1_1 Sb 0.37500 0.00000 0.25000
Sb1_2 Sb  0.00000 0.25000 0.37500
Ce1 Ce 0.57100 0.57100 0.57100

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
Ce1 0.00000 0.00000 1.24(1) mx,my,mz  1.24(1)

