#\#CIF_2.0
# Created by the Bilbao Crystallographic Server
# http://www.cryst.ehu.es
# Date: 22/05/2021 

data_5yOhtAoR
_audit_creation_date            2021-05-22
_audit_creation_method          "Bilbao Crystallographic Server"

_citation_journal_abbrev        "Journal of the Less-Common Metals"
_citation_journal_volume        175
_citation_page_first            143
_citation_page_last             154
_citation_article_id            .
_citation_year                  1991
_citation_DOI                   10.1016/0022-5088(91)90359-C

loop_
_citation_author_name
"B. Chafik"
"E. Idrissi"
"G. Venturini"
"B. Malaman"
"D. Fruchart"

_atomic_positions_source_database_code_ICSD  .
_atomic_positions_source_other               .

_temperature_position_structure         .
_temperature_atom_positions             171             
_temperature_non-magn_atom_positions    .
_temperature_cell_parameters            300

_transition_temperature  175
_experiment_temperature  171

loop_
_irrep_id
_irrep_dimension
_irrep_small_dimension
_irrep_direction_type
_irrep_action
_irrep_modes_number
_irrep_presence
mGM2+  1  1  .  primary  2  .
mGM6+  2  2  special primary 3 .
mGM3+  1  1  .  secondary 1  no
mGM5+  2  2  special secondary 1 no

_exptl_crystal_magnetic_properties_details
;
NPD
Angle of the spins direction with the c axis: 76(3) degrees
Cell parameters from a determination at an unspecified temperature, probably 300K
Atomic positions from a determination at 171K
The direction of the spin on the basal ab plane is undetermined. Here a direction of maximal symmetry has been taken arbitrarily.
The spins order collinearly in a ferrimagnetic arrangement on the basal plane below 376K (see #0.705). Below about 175K a phase transition takes place and the spins direction changes to an oblique direction with a component along c.
FM on the ac plane. Ferrimagnetic
;

_active_magnetic_irreps_details
;
1k magnetic structure
Two irreps as primary. This means that two order parameters in the sense of Landau theory are present.
Two secondary irreps allowed by the MSG, but not present in the model. They add two additional degrees of freedom to the spin arrangement under its MSG.
;

_parent_space_group.name_H-M_alt  'P 6/m m m'
_parent_space_group.IT_number                       191
_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  12.62
_space_group_magn.name_BNS  "C 2'/m'"
_cell_length_a             5.50500
_cell_length_b             5.50500
_cell_length_c             8.99100
_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,-z,+1 
3 -x+y,y,-z,-1 
4 x-y,-y,z,-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
Ho1 Ho 0.00000 0.00000 0.50000
Mn1_1 Mn 0.50000 0.00000 0.255(1)
Mn1_2 Mn  0.00000 0.50000 0.255
Sn1 Sn 0.33333 0.66667 0.00000
Sn2 Sn 0.33333 0.66667 0.50000
Sn3 Sn 0.00000 0.00000 0.171(2)

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
Ho1 5.11 0.00000 1.27 mx,0,mz        5.27(9)
Mn1_1 -2.11 0.00000 -0.53 mx,0,mz    2.18(6)
Mn1_2 -2.11 0.00000 -0.53 mx,my,mz   2.18(6)

