#\#CIF_2.0
# Created by the Bilbao Crystallographic Server
# http://www.cryst.ehu.es
# Date: 05/03/2021 20:00:21

data_5yOhtAoR
_audit_creation_date            2021-05-03
_audit_creation_method          "Bilbao Crystallographic Server"

_citation_journal_abbrev        "PHYSICS LETTERS"
_citation_journal_volume        65A
_citation_page_first            156
_citation_page_last             158
_citation_article_id            .
_citation_year                  1978
_citation_DOI                   10.1016/0375-9601(78)90603-5

loop_
_citation_author_name
"P. Morin"
"J. Pierre"
"D. Schmitt"
"D. Givord1"

_atomic_positions_source_database_code_ICSD  635912
_atomic_positions_source_other               .

_temperature_position_structure         293
_temperature_atom_positions             .              
_temperature_non-magn_atom_positions    .
_temperature_cell_parameters            .

_transition_temperature     110
_experiment_temperature     12

loop_
_irrep_id
_irrep_dimension
_irrep_small_dimension
_irrep_direction_type
_irrep_action
_irrep_modes_number
_irrep_presence
mGM4+ 3  3  special primary 2  .
mX5+  6  2  special primary 1  .  

_exptl_crystal_magnetic_properties_details
;
NPD
Position structure (cell parameter) used here is from another study at room temperature
Moment components only approximate. The Gd moment is given in the paper as: 5.1(3)*(1/2^0.5,1/2^0.5,0) + 4.9(3)*(1/3^0.5,1/3^0.5, 1/3^0.5).
;

_active_magnetic_irreps_details
;
2k magnetic structure
Two irreps as primary: two order parameters in the sense of Landau theory are present.
;

_parent_space_group.name_H-M_alt  'P m -3 m'
_parent_space_group.IT_number                       221
_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]
k2 [0 0 1/2]

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

_space_group_magn.number_BNS  15.89
_space_group_magn.name_BNS  "C 2'/c'"
_space_group_magn.point_group_name  "2'/m'"
_space_group_magn.point_group_number  "5.5.16"
_cell_length_a                 3.81200
_cell_length_b                 3.81200
_cell_length_c                 7.62400
_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 -y,-x,-z+1/2,-1 
4 y,x,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
Gd1 Gd 0.00000 0.00000 0.00000 1
Mg1 Mg 0.50000 0.50000 0.25000 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
Gd1 6.5 -0.8 2.8 mx,my,mz  7.1

