#\#CIF_2.0
# Created by the Bilbao Crystallographic Server
# http://www.cryst.ehu.es
# Date: 24/04/2021

data_5yOhtAoR
_audit_creation_date            2021-04-24
_audit_creation_method          "Bilbao Crystallographic Server"

_citation_journal_abbrev        "J. Appl. Phys."
_citation_journal_volume        39
_citation_page_first            461
_citation_page_last             .
_citation_article_id            .
_citation_year                  1968
_citation_DOI                   10.1063/1.2163480

loop_
_citation_author_name
"L. M. Corliss"
"J. M. Hastings"

_atomic_positions_source_database_code_ICSD  171198
_atomic_positions_source_other               .

_temperature_position_structure         157
_temperature_atom_positions             .              
_temperature_non-magn_atom_positions    .
_temperature_cell_parameters            .

_transition_temperature  74
_experiment_temperature  4.2

loop_
_irrep_id
_irrep_dimension
_irrep_small_dimension
_irrep_direction_type
_irrep_action
_irrep_modes_number
_irrep_presence
mDT4  4  1  special  primary  1  .

_exptl_crystal_magnetic_properties_details
;
NPD
Position structure used here from another work at 157K
Above 74K, up to 325K,  another magnetic commensurate structure is observed (see #1.558). Also an intermediate incommensurate structure is mentioned.
;

_active_magnetic_irreps_details
;
1k magnetic structure
k-maximal magnetic symmetry
2-dim small extended (k,-k) irrep along a special direction as primary.
The active irrep has four k-vectors in its star. Possible alternative multi-k orderings were not considered
;

_parent_space_group.name_H-M_alt  'I 4/m c m'
_parent_space_group.IT_number                       140
_parent_space_group.transform_Pp_abc  'a,b,c;0,0,0'

loop_
_parent_propagation_vector.id
_parent_propagation_vector.kxkykz
k1 [1/4 1/4 0]

_parent_space_group.child_transform_Pp_abc  '4a,4b,c;0,0,0'
_space_group_magn.transform_BNS_Pp_abc  '-c,-1/4a+1/4b,1/2a+1/2b;0,1/8,0'

_space_group_magn.number_BNS  66.498
_space_group_magn.name_BNS  "C_c c c m"
_cell_length_a             26.57520
_cell_length_b             26.57520
_cell_length_c             5.42060
_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+1/4,-y+1/2,z,+1 
3 -y+3/8,-x+3/8,-z,+1 
4 y+7/8,x+1/8,-z,+1 
5 -x,-y+1/4,-z,+1 
6 x+1/4,y+1/4,-z,+1 
7 y+1/8,x+3/8,z,+1 
8 -y+1/8,-x+1/8,z,+1 

loop_
_space_group_symop_magn_centering.id
_space_group_symop_magn_centering.xyz
1 x,y,z,+1 
2 x+1/8,y+7/8,z+1/2,+1 
3 x+1/4,y+3/4,z,+1 
4 x+3/8,y+5/8,z+1/2,+1 
5 x+1/2,y+1/2,z,+1 
6 x+5/8,y+3/8,z+1/2,+1 
7 x+3/4,y+1/4,z,+1 
8 x+7/8,y+1/8,z+1/2,+1 
9 x+1/8,y+3/8,z+1/2,-1 
10 x+1/4,y+1/4,z,-1 
11 x+3/8,y+1/8,z+1/2,-1 
12 x+1/2,y,z,-1 
13 x+5/8,y+7/8,z+1/2,-1 
14 x+3/4,y+3/4,z,-1 
15 x+7/8,y+5/8,z+1/2,-1 
16 x,y+1/2,z,-1 

loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Mn1 Mn 0.00000 0.00000 0.25000
Sn1_1 Sn 0.04036 0.16536 0.00000
Sn1_2 Sn  0.08464 0.04036 0.00000
Sn1_3 Sn  0.04036 0.41536 0.00000
Sn1_4 Sn  0.08464 0.29036 0.00000

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
Mn1 1.65 1.65 0.00000 mx,mx,0  2.33

