# Created by the Bilbao Crystallographic Server
# http://www.cryst.ehu.es
# Date: 20/02/2018 01:49:32
# icsd_612326.cif

data_5yOhtAoR
_audit_creation_date            2018-02-20
_audit_creation_method          "Bilbao Crystallographic Server"

_citation_journal_abbrev        "PHYSICAL REVIEW B"
_citation_journal_volume        96
_citation_page_first            ?
_citation_page_last             ?
_citation_article_id            214442
_citation_year                  2017
_citation_DOI                   10.1103/PhysRevB.96.214442

loop_
_citation_author_name
"C. Tabata"
"M. Klicpera"
"B. Ouladdiaf"
"H. Saito"
"M. Valiska"
"K. Uhlrova"
"N. Miura"
"V. Sechovsky"
"H. Amitsuka"




_atomic_positions_source_database_code_ICSD  .
_atomic_positions_source_other               .

_transition_temperature  20
_experiment_temperature  2

loop_
_irrep_id
_irrep_dimension
_irrep_small_dimension
_irrep_direction_type
_irrep_action
_irrep_modes_number
_irrep_presence
mSM4  4  2  special primary  1  .
mGM3+ 1  1   .   secondary 1  yes

_exptl_crystal_magnetic_properties_details
;
NSD single crystal and NMR
Structural positional model from a 30K experiment
;

_active_magnetic_irreps_details
;
k-maximal magnetic symmetry
Square-like spin modulation that requires a FM k=0 component (third harmonic). It was estimated to be 0.3 muB by magnetization measurements. Too small to be detected in the diffraction data.
;

_parent_space_group.name_H-M_alt  'I  4/m  m  m'
_parent_space_group.IT_number                       139
_parent_space_group.transform_Pp_abc  'a,b,c;0,0,0'

loop_
_parent_propagation_vector.id
_parent_propagation_vector.kxkykz
k1 [2/3 0 0]

_parent_space_group.child_transform_Pp_abc  '3a,b,c;0,0,0'
_space_group_magn.transform_BNS_Pp_abc  'a,b,c;0,0,0'



_space_group_magn.number_BNS  71.536
_space_group_magn.name_BNS  "I  m'  m'  m  "
_cell_length_a             12.60
_cell_length_b             4.20
_cell_length_c             10.26
_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 -x,-y,-z,+1
4 x,y,-z,+1
5 x,-y,-z,-1
6 -x,y,-z,-1
7 -x,y,z,-1
8 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+1/2,+1

loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
U1_1 U 0.00000 0.00000 0.00000
U1_2 U  0.16667 0.50000 0.50000
Au1_1 Au 0.00000 0.50000 0.25000
Au1_2 Au  0.16667 0.00000 0.25000
Si1_1 Si 0.00000 0.00000 0.389
Si1_2 Si  0.16667 0.50000 0.889

loop_
_atom_site_moment.label
_atom_site_moment.crystalaxis_x
_atom_site_moment.crystalaxis_y
_atom_site_moment.crystalaxis_z
_atom_site_moment.symmform
U1_1 0.00000 0.00000 -0.9(1) 0,0,mz
U1_2 0.00000 0.00000 0.9 0,0,mz


