#\#CIF_2.0
# Created by the Bilbao Crystallographic Server
# http://www.cryst.ehu.es
# Date: 04/18/2020

data_5yOhtAoR
_audit_creation_date            2020-04-18
_audit_creation_method          "Bilbao Crystallographic Server"

_citation_journal_abbrev        "J. Phys.: Condens. Matter"
_citation_journal_volume        9
_citation_page_first            6651
_citation_page_last             6663
_citation_article_id            ?
_citation_year                  1997
_citation_DOI                   10.1088/0953-8984/9/31/017

loop_
_citation_author_name
"A. Szytula"
"M. Kolenda"
"E. Ressouche"
"W. Sikora"




_atomic_positions_source_database_code_ICSD  84169
_atomic_positions_source_other               .

_transition_temperature     19.5
_experiment_temperature     13


loop_
_irrep_id
_irrep_dimension
_irrep_small_dimension
_irrep_direction_type
_irrep_action
_irrep_modes_number
_irrep_presence
mLD1 2 1 general primary 3 .

_exptl_crystal_magnetic_properties_details
;
NPD
Position structure from a measurement at 25K
;

_active_magnetic_irreps_details
;
1k incommensurate magnetic structure
k-maximal magnetic structure (4 possible)
The reported propagation vector (0,1,0.206) has been changed to the equivalent one (0,0,0.794)
2-dim irrep as primary.
;

_parent_space_group.name_H-M_alt  'I b a m'
_parent_space_group.IT_number             72
_parent_space_group.transform_Pp_abc  'a,b,c;0,0,0'

_cell_modulation_dimension               1

loop_
_cell_wave_vector_seq_id
_cell_wave_vector_x
_cell_wave_vector_y
_cell_wave_vector_z
1 0.000000 0.000000 0.794000


_parent_space_group.child_transform_Pp_abc  'a,b,c;0,0,0'

_space_group.magn_ssg_name  "Ibam1'(00g)000s"
_space_group.magn_point_group_name  "mmm1'"
_space_group.magn_point_group_number  8.2.25
_cell_length_a                 9.544
_cell_length_b                 11.136
_cell_length_c                 5.6286
_cell_angle_alpha              90
_cell_angle_beta               90
_cell_angle_gamma              90


loop_
_space_group_symop_magn_ssg_operation.id
_space_group_symop_magn_ssg_operation.algebraic
1 x1,x2,x3,x4,+1
2 -x1,-x2,x3,x4,+1
3 -x1,x2,-x3+1/2,-x4,+1
4 x1,-x2,-x3+1/2,-x4,+1
5 -x1,-x2,-x3,-x4,+1
6 x1,x2,-x3,-x4,+1
7 x1,-x2,x3+1/2,x4,+1
8 -x1,x2,x3+1/2,x4,+1

loop_
_space_group_symop_magn_ssg_centering.id
_space_group_symop_magn_ssg_centering.algebraic
1 x1,x2,x3,x4,+1
2 x1+1/2,x2+1/2,x3+1/2,x4,+1
3 x1,x2,x3,x4+1/2,-1
4 x1+1/2,x2+1/2,x3+1/2,x4+1/2,-1

loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
Tb1 Tb 0.2682 0.373 0 1
Ni1 Ni 0.1148 0.1390 0 1
Ni2 Ni 0.5 0 0.25 1
Si1 Si 0.3467 0.131 0 1
Si2 Si 0 0.261 0.25 1
Si3 Si 0 0 0.25 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
Tb1 0 0 0 0,0,0

loop_
_atom_site_Fourier_wave_vector.seq_id
_atom_site_Fourier_wave_vector.q1_coeff
1 1

loop_
_atom_site_moment_Fourier.atom_site_label
_atom_site_moment_Fourier.axis
_atom_site_moment_Fourier.wave_vector_seq_id
_atom_site_moment_Fourier_param.cos
_atom_site_moment_Fourier_param.sin
_atom_site_moment_Fourier_param.cos_symmform
_atom_site_moment_Fourier_param.sin_symmform
Tb1 x 1 0 0 0 mxs1
Tb1 y 1 0 0 0 mys1
Tb1 z 1 6.55(5) 0 mzc1 0

