#\#CIF_2.0
# Created by the Bilbao Crystallographic Server
# http://www.cryst.ehu.es
# Date: 16/04/2021 

data_5yOhtAoR
_audit_creation_date            2021-04-16
_audit_creation_method          "Bilbao Crystallographic Server"

_citation_journal_abbrev        "Acta Cryst. B"
_citation_journal_volume        77
_citation_page_first            219
_citation_page_last             224
_citation_article_id            .
_citation_year                  2021
_citation_DOI                   10.1107/S205252062100127X

loop_
_citation_author_name
"S. Baran"
"A. Deptuch"
"B. Penc"
"A. Hoser"
"A. Szytula"

_atomic_positions_source_database_code_ICSD  .
_atomic_positions_source_other               .

_transition_temperature  6
_experiment_temperature  3.7

loop_
_irrep_id
_irrep_dimension
_irrep_small_dimension
_irrep_direction_type
_irrep_action
_irrep_modes_number
_irrep_presence
mA2-  1  1  .  primary  1  .

_exptl_crystal_magnetic_properties_details
;
NPD
Below 2K, Er2 is also ordered with an incommensurate modulation (see entry #1.1.120)
This corrects a previous model proposed by the same group (Wawrzynska et al, J._Phys. _Condens._Matter (2003) 15,5279; DOI:10.1088/0953-8984/15/30/310)
The figures in the paper are not consistent with the description in the text and tables, which has been assumed correct.
;

_active_magnetic_irreps_details
;
1k magnetic structure
k-maximal magnetic symmetry
1-dim irrep as primary
;

_parent_space_group.name_H-M_alt  'C 2/m'
_parent_space_group.IT_number                       12
_parent_space_group.transform_Pp_abc  'a,b,c;0,0,0'

loop_
_parent_propagation_vector.id
_parent_propagation_vector.kxkykz
k1 [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,c;0,0,1/4'



_space_group_magn.number_BNS  12.63
_space_group_magn.name_BNS  "C_c 2/m"
_cell_length_a             16.08310
_cell_length_b             4.38870
_cell_length_c             13.74640
_cell_angle_alpha          90.00
_cell_angle_beta           115.75
_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,-z+1/2,+1 
4 x,-y,z,+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 
3 x,y,z+1/2,-1 
4 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
Er1 Er 0.00000 0.00000 0.25000
Er2 Er 0.12900 0.00000 0.05850
Cu1 Cu 0.32100 0.00000 0.25900
Cu2 Cu 0.33800 0.00000 0.07600
Sn1 Sn 0.21600 0.00000 0.36550
Sn2 Sn 0.50600 0.00000 0.10400

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
Er1 0.00000 8.86(7) 0.00000 0,my,0  8.86(7)
Er2 0.00000 0.00000 0.00000 0,my,0  0.00

